In the 

Missouri Court of Appeals 

Western District

GEORGE W. GILES,

Appellant,

v.

CARMI FLAVOR AND FRAGRANCE 

COMPANY, INC., ET AL.,

Respondents.

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WD77952

OPINION FILED: 

September 22, 2015

Appeal from the Circuit Court of Buchanan County, Missouri

The Honorable Daniel F. Kellogg, Judge

Before Division Four: Alok Ahuja, Chief Judge, Presiding, Gary D. Witt, Judge and 

John M. Torrence, Special Judge

Appellant George W. Giles ("Giles") appeals from the entry of summary judgment 

in favor of his former employer, Respondent Ventura Foods,

1

as well as several entities 

that Giles alleged designed, manufactured, and/or sold the product that caused his 

medical condition while he was employed at Ventura Foods (collectively 

 

1 There is no contention that Giles's claims against Ventura Foods fall instead within the exclusive-remedy 

provisions of the Workers' Compensation Law. See State ex rel. KCP&L Greater Mo. Operations Co. v. Cook, 353 

S.W.3d 14 (Mo. App. W.D. 2011).
2

"Respondents").2 Because a genuine issue of material fact remains as to when Giles's 

injury was capable of ascertainment, we reverse.

Factual and Procedural History3

Giles worked at Respondent Ventura Foods's facility in St. Joseph from 

September 1, 1997 until May 30, 2003. During the entire time that he worked as a 

maintenance worker and welder, Giles was exposed to diacetyl, which is a chemical that 

was used in butter flavoring. Giles alleges that diacetyl is a strong irritant when inhaled. 

Giles began to experience difficulty breathing, including shortness of breath, coughing, 

and wheezing, approximately two years after he began working at Ventura Foods. 

In June 2001, Giles was referred by his primary care physician to board-certified 

pulmonologist Dr. Mark Yagan ("Dr. Yagan"). Giles saw Dr. Yagan several times in 

mid-to-late 2001 and on January 2, 2002. At some point during treatment, Dr. Yagan 

learned that Giles welded equipment which processed butter flavoring and learned of a 

potential connection to the flavoring and lung disease. Both Giles and Dr. Yagan saw at 

least one newspaper article about the possible connection between butter flavoring and 

certain lung diseases. The information was reported in the newspaper after a cluster of 

bronchiolitis obliterans cases occurred at a microwave popcorn plant in Jasper, Missouri, 

where butter flavoring containing diacetyl were used. 

 

2 Giles alleged that butter flavor products and/or diacetyl used at Ventura Foods were designed, 

manufactured, and/or sold by Respondents Carmi Flavor and Fragrance Company, Inc., Centrome, Inc., Citrus & 

Allied Essences, Ltd., Danisco USA Inc., Firmenich, Incorporated, Flavurence Corporation, Givaudan Flavors 

Corporation, Givaudan Flavors and Fragrances, Inc., Henkel Corporation, Mother Murphy's Laboratories, Inc., 

Phoenix Aromas & Essential Oils Holdings, Inc., and Quest International, LLC. We received three Respondents' 

briefs, and their arguments are addressed in this opinion collectively unless otherwise noted.

3

"When considering appeals from summary judgments, the Court will review the record in the light most 

favorable to the party against whom judgment was entered." ITT Commercial Fin. Corp. v. Mid-Am. Marine Supply 

Corp., 854 S.W.2d 371, 376 (Mo. banc 1993).
3

At an appointment on October 17, 2001, Dr. Yagan noted that Giles's presentation 

was not similar to the presentation of the workers in the Jasper plant who were diagnosed 

with the butter-flavoring caused lung disease. Sometime later that month, Dr. Yagan had 

a telephone conversation with Dr. Alan Parmet ("Dr. Parmet"), an occupational 

physician, about a different patient. As an aside, Dr. Yagan asked Dr. Parmet about 

Giles's case. Dr. Yagan wrote down the word "diacetyl" and noted there was a possibility 

of workplace exposure. As of at least October 31, 2001, Dr. Yagan believed that there 

may have been a possibility that Giles's lung condition could be related to his work. He 

noted in his medical records that he was concerned that Giles has an occupationalinduced illness perhaps due to diacetyl. Specifically, Dr. Yagan wondered whether Giles 

was developing obstructive bronchiolitis obliterans or an interstitial lung disease. 

Although the record is not clear as to the specifics, either Dr. Yagan or Giles 

sought a Material Safety Data Sheet ("MSDS") from Ventura Foods, and a copy was 

faxed to Dr. Yagan. The MSDS confirmed that diacetyl was present in Giles's

workplace. The MSDS did not say the product would cause lung disease. Giles asked 

employees and representatives of Ventura Foods whether the same ingredients used in the 

microwave popcorn plant in Jasper that were causing workers lung disease were used at 

the Ventura Foods plant. Giles was assured by management that the amount of diacetyl 

used at the Ventura Foods plant was so small that it could not cause injury, particularly 

since he did not handle the product. 

Dr. Yagan placed Giles on medical leave for four weeks to assess whether removal 

from the workplace would improve his symptoms. On October 30, 2001, Giles submitted 
4

a request under the Family and Medical Leave Act stating that the doctor wants "to see if 

something at work is causing my lung to be irritated, and inflamed." Dr. Yagan also 

informed Giles's primary care physician that Giles's symptoms were potentially caused by 

workplace exposure to diacetyl. 

Giles began showing improvement while he was away from work while taking

less prednisone,

4

so Dr. Yagan initially thought that the variable that was different was 

not being at work. Dr. Yagan noted that the only way to prove that the butter flavoring 

was causing the condition was to taper Giles off of steroids and monitor him. If he "is 

doing okay then I will expose him to work again and see if the cough comes back" 

(emphasis added). But keeping Giles out of work did not make the condition go away, 

and in November of 2001, Dr. Yagan noted that this makes the occupationally induced 

disease "less likely." When asked whether it was his plan to "try to rule it out altogether," 

Dr. Yagan stated that "if his cough wasn't getting better I was going to keep pursuing all 

possibilities" (emphasis added). On January 2, 2002, Dr. Yagan performed a medical test 

(a methacholine challenge) which came back positive for asthma. That too made it less 

likely to Dr. Yagan that Giles had bronchiolitis obliterans, the lung disease caused by 

exposure to diacetyl. Additionally, Dr. Yagan ruled out interstitial lung disease. He 

communicated to Giles that his symptoms were caused by asthma which was flared up by 

sinusitis. 

Also on January 2, 2002, Dr. Yagan cleared Giles to return to work. Dr. Yagan 

had not ruled out occupational exposure and believed further follow up was necessary for 

 

4

Prednisone is steroid used to treat Giles's breathing symptoms. 
5

a complete diagnosis, though he did not tell Giles this at the last appointment. Dr. Yagan 

testified, however, that if he had thought that there was "a serious consideration that Mr. 

Giles had occupational lung disease," then he would not have cleared him to return to 

work. Additionally, Dr. Yagan did not place any restrictions on Giles returning to work. 

Giles did not return to see Dr. Yagan because it seemed to him that prednisone was 

controlling his breathing problems (thus he saw "no sense to go back to him") and 

because he had no health insurance at the time. 

On April 21, 2004, Giles saw his new primary care physician, Dr. Renee 

Claycamp ("Dr. Claycamp"), because he needed refills for his asthma medication. Dr. 

Claycamp referred Giles to a second pulmonologist, Dr. Nancy Brecheisen ("Dr. 

Brecheisen"), who examined Giles on November 30, 2005. Giles told this doctor that he 

had worked at Ventura Foods and related that he had been exposed to butter flavoring, 

which had been problematic for workers in a popcorn plant in southern Missouri. 

Although Dr. Brecheisen included Giles's concern in her treatment notes, after her 

examination, she was not able to diagnose Giles with anything other than asthma, a 

component of which was reversible, and dyspnea. Specifically, in her "ASSESSMENT" 

of Giles, she stated:

1. Mr. Giles is a 45-year-old male with asthma despite persistent use of 

steroids for the last four years. He still has a component of reversible 

disease present.

2. Dyspnea, likely secondary to incompletely treated asthma.

3. History of Wolf-Parkinson-White cardiac disease.

And in her "RECOMMENDATIONS" for Giles, she stated:
6

1. At this point, we will go ahead and repeat his allergen testing in hopes 

to find an allergen; an elevated lgE in attempts to document allergic 

component to his asthma which allowed immunomodulation with 

Xolair. I will follow up with him in two to three weeks after these labs 

are obtained.

2. He will call if problems occur in the interim.

3. If we can't get him off prednisone we might need to consider adding 

Methotrexate in as a steroid sparing agent.

The record includes no further medical history until November or December of 

2011. At that time, Dr. Parmet examined Giles and diagnosed him with bronchiolitis 

obliterans, caused by the exposure to diacetyl contained in butter flavoring.5 On 

January 4, 2012, Giles filed an action against Respondents based on flavoring-induced 

pulmonary disease. Giles voluntarily dismissed the action on July 18, 2013 but re-filed 

on December 3, 2013. Respondents brought motions for summary judgment based on the 

statute of limitations, which were sustained after a hearing. Giles appeals from the grant 

of summary judgment in favor of all Respondents as to all counts of Giles's petition. 

Further facts are set forth below as necessary.

Standard of Review

Summary judgment shall be entered if "there is no genuine issue as to any material 

fact and . . . the moving party is entitled to judgment as a matter of law." Rule 

74.04(c)(6). The moving party bears the burden of establishing a right to judgment as a 

matter of law. Id. The statute of limitations is an affirmative defense under Rule 55.08, 

and respondents who move for summary judgment on that basis bear the burden of 

 

5 Giles was referred to Dr. Parmet by his current legal counsel. 
7

showing that it bars a plaintiff's claims. Powel v. Chaminade Coll. Preparatory, Inc., 197 

S.W.3d 576, 580 (Mo. banc 2006). 

When considering appeals from summary judgments, the Court will 

review the record in the light most favorable to the party against whom 

judgment was entered. Facts set forth by affidavit or otherwise in support 

of a party's motion are taken as true unless contradicted by the non-moving 

party's response to the summary judgment motion. We accord the nonmovant the benefit of all reasonable inferences from the record. 

Our review is essentially de novo. The criteria on appeal for testing 

the propriety of summary judgment are no different from those which 

should be employed by the trial court to determine the propriety of 

sustaining the motion initially. The propriety of summary judgment is 

purely an issue of law. As the trial court's judgment is founded on the 

record submitted and the law, an appellate court need not defer to the trial 

court's order granting summary judgment. 

ITT Commercial Fin. Corp. v. Mid-Am. Marine Supply Corp., 854 S.W.2d 371, 376 (Mo. 

banc 1993) (citations omitted).

"An abundance of caution must be exercised in granting a motion for summary 

judgment because it is an extreme and drastic remedy that borders on the denial of due 

process because the opposing party is denied its day in court." Jordan v. Peet, 409 

S.W.3d 553, 557 (Mo. App. W.D. 2013) (internal quotation marks and citation omitted). 

Thus, where the record does not support the granting of summary judgment, we will 

reverse. Id. Summary judgment should be denied where the affidavits or other sworn 

statements require an evaluative judgment between two rationally possible conclusions, 

even if the court is convinced the evidence makes it unlikely that a party can prevail at 

trial. Reasons v. Union Pacific R.R. Co., 886 S.W.2d 104, 107 (Mo. App. E.D. 1994) 

(citation omitted). 
8

Analysis

In his sole point on appeal, Giles argues that the trial court erred in entering 

summary judgment in favor of Respondents on the basis that Giles's claims were barred 

by the five-year statute of limitations because there is a genuine issue of fact whether 

Giles's claim accrued or was capable of ascertainment prior to his diagnosis of 

bronchiolitis obliterans in 2011. 

The parties agree that the question is whether this action falls within the five-year 

limitation set out in Section 516.120. They dispute, however, whether the trial court 

erred in granting summary judgment pursuant to the language of Section 516.100, which 

states: 

Civil actions, other than those for the recovery of real property, can 

only be commenced within the periods prescribed in the following sections, 

after the causes of action shall have accrued; provided, that for the 

purposes of sections 516.100 to 516.370, the cause of action shall not be 

deemed to accrue when the wrong is done or the technical breach of 

contract or duty occurs, but when the damage resulting therefrom is 

sustained and is capable of ascertainment, and, if more than one item of 

damage, then the last item, so that all resulting damage may be recovered, 

and full and complete relief obtained.

(Emphases added.)

Because the action in this case was filed January 4, 2012,6the parties further agree 

that the operative date that determines whether Giles timely filed this action was 

January 4, 2007.7 There is little question of when the exposure occurred. Giles worked 

 

6 The parties do not dispute that this case falls within the savings statute, Section 516.230, such that the 

filing of the original action (prior to dismissal) is the date measured for the statute of limitations.

7 Respondent Ventura Foods contends that the statute of limitations began running in 2001, when Giles met 

with Dr. Yagan. Respondent Flavurence Corporation argues that the statute of limitations began running as early as 
9

at Ventura Foods from 1999 until 2003, and it is conceded that diacetyl was present at the 

factory throughout his employment. The only issue, then, is whether the damages Giles 

sustained during his years of exposure to diacetyl at Ventura Foods were "capable of 

ascertainment" prior to 2007.

In Powel, our Supreme Court examined the term "capable of ascertainment" in this 

context. The Court began by noting that in the last amendment to Section 516.100, the 

legislature stated "in the plainest of words that the cause of action should no longer be 

deemed to accrue 'when the wrong is done or the technical breach of contract or duty 

occurs.'" 197 S.W.3d at 581 (quoting Thorne v. Johnson, 483 S.W.2d 658, 661-62 (Mo. 

App. K.C. 1972)). Instead, "the cause of action shall be deemed to accrue and all 

limitations shall commence to run only from the time 'when the damage resulting 

therefrom is sustained and is capable of ascertainment.'" Id. Stated another way, the 

Powel court held that

the legislature specifically required in section 516.100 that a court cannot

make the time the wrong is done or technical breach of duty occurs the time 

when the cause of action accrues. Neither does it accrue as soon as 

damages occur. A third event must also take place before the claim 

accrues: in addition to the wrongful act, and in addition to the resulting 

damages, the damages must also be capable of ascertainment.

197 S.W.3d at 582 (emphases in original). 

Noting that its holding was consistent with forty years of jurisprudence, the Powel

Court boiled down the test for when damages are capable of ascertainment and thus when 

the statute of limitations begins to run to when the "evidence was such to place a 

 

2001 but no later than 2005. For reasons set forth below, we determine simply that there is a genuine issue of 

material fact as to whether Giles's injury was capable of ascertainment prior to January 4, 2007.
10

reasonably prudent person on notice of a potentially actionable injury." Id. at 582. "At 

that point, damages would be sustained and capable of ascertainment as an objective 

matter [or, in other words,] that is the moment when the damages would be 'substantially 

complete.'" Id. (citation omitted).

In determining whether the evidence in this case was such to place a reasonably 

prudent person on notice of a potentially actionable injury and thus the time when the 

damages would be substantially complete, we draw from several cases where courts have 

considered the "practical construction" of the term "capable of ascertainment" in similar 

situations. Id. at 583.

In Elmore v. Owens-Illinois, Inc., the plaintiff brought a claim for injuries 

resulting from a prolonged exposure to asbestos dust manufactured by the defendant. 673

S.W.2d 434, 435 (Mo. banc 1984). The plaintiff had worked with asbestos from 1943 

until he retired in 1976. Asbestosis is detectable from as early as 4 years to as long as 20 

years after exposure, with the 15-20 year latency period being more common. Id. at 436. 

The plaintiff began to be short of breath, a symptom of asbestosis, in 1973; he was 

diagnosed with asbestosis in 1976. The court noted that although "Elmore knew as early 

as 1973 that he had shortness of breath, and knew also, from reading publications of his 

union, that long-term breathing of asbestos dust caused asbestosis, he did not know that 

his condition was asbestosis until it was diagnosed by his physician on May 13, 1976." 

Id. at 436. The court held

It was not until such diagnosis was made that the character of the

condition (asbestosis) and its cause (breathing asbestos dust) first 'came 

together' for the plaintiff. Thus, [the] cause of action accrued on May 13, 
11

1976, the date of the diagnosis made by his doctor at her office in Kansas 

City and was not barred by Missouri's five-year statute. 

Id. See also Hogan v. Armstrong World Indus., 840 S.W.2d 230, 235 (Mo. App. W.D. 

1992) (where plaintiff was not told of asbestosis after 1974 doctor visit and instead was 

diagnosed after the benefit of "hindsight" in 1985, the later date commenced the 

limitations period).

In Ray v. Upjohn Co., the plaintiff sought damages for injuries to his respiratory 

system that were caused by inhalation of fumes from a chemical that he inhaled while 

working at an automotive fan manufacturing plant. 851 S.W.2d 646, 649 (Mo. App. S.D. 

1993). The plaintiff claimed that exposure to chemicals used in the manufacturing 

process caused him to develop isocyanate asthma (from breathing a polymeric 

isocyanate). Id. at 649. In July 1963, the plaintiff began experiencing trouble breathing. 

At the request of his doctor, the plaintiff obtained a chemical sample for examination 

purposes. After inhaling the fumes, the plaintiff experienced a respiratory reaction. The 

doctor requested that the plaintiff be moved out of the area where he had been working. 

From 1963 until 1979, the plaintiff worked in various areas of the plant, sometimes in the 

area where the chemical was used. Id. He experienced some breathing difficulties from 

1966 to 1973, but he did not seek medical attention. Id.

In 1977, the plaintiff was instructed to work directly with the chemical. Id. After 

being exposed to it for about 10 minutes, he experienced breathing difficulties and sought 

attention from his employer's nurse. The plaintiff experienced no breathing problems 

between 1977 and 1979. Then, in September 1979, he collapsed at work and the cause 
12

was believed to be the chemical.8 The plaintiff was off work until March 1980. His 

breathing problems progressively worsened in his new work location, and he was forced 

to resign. In 1983, he saw a doctor experienced in the study of respiratory problems 

relating to iscocyanates exposure. That doctor diagnosed isocynate asthma. His petition

was filed on September 10, 1984. Id. at 650.

On appeal, the court held that the action in Ray was not barred by the statute of 

limitations because it did not begin to run until he was aware of his condition and its 

cause. Id. (citing Elmore, 673 S.W.2d 434). And as to whether there was a genuine issue 

of material fact, the court held that there was no dispute that the plaintiff was not 

diagnosed until 1983, which is when the statute of limitations began to run. Id. at 650-51.

In Reasons, the Eastern District considered the statute of limitations in the context 

of an occupational hazard. 886 S.W.2d 104. There, the plaintiff was a boilermaker with 

a long history of allergies, bronchitis, and sinus problems. Id. at 106. In 1976, he began 

working for a railroad and was continuously exposed to asbestos, odors from diesel 

engines, cleaning agents, chemicals, spray paint, dust particles, fumes, and black smoke 

created by welding around motor grease and other engine oils. Id. He believed that 

exposure to these products was merely triggering his allergies or that he was experiencing 

normal reactions to the irritants. While at work, he suffered symptoms but "felt fine" as 

soon as he left his work place. In 1979, an allergist informed plaintiff's employer that 

work conditions were irritating the plaintiff's sinuses and bronchial tubes and aggravating 

 

8 This event occurred slightly more than five years prior to the filing of the petition, so could not have been 

the triggering event to begin the running of the statute under that court's analysis. Id. at 650. 
13

his symptoms and recommended that the plaintiff wear a filtering apparatus or respirator. 

The plaintiff did not realize that the conditions were causing permanent damage to his 

lungs, sinuses, or respiratory system. Id.

In December 1986, the plaintiff was referred to a pulmonary expert, who 

diagnosed him with chronic bronchitis with a possible asthmatic component. Id. The 

expert noted that the plaintiff wondered whether there was a possible connection between 

his employment and his condition and they discussed the employee taking a new job, but 

the doctor believed the condition "probably [had] no specific cause" and prescribed 

medicine but allowed the plaintiff to continue work at the railroad. Id. at 106-07. The 

plaintiff began seeing another doctor in 1988, who diagnosed him with occupational 

asthma and who was the first physician to find a connection between the condition and 

the employment. Id. at 107. By 1991, the condition was advanced and the plaintiff was 

unable to work for an extended period of time. He filed suit on January 31, 1991. Id.

The Reasons action was brought under the Federal Employers' Liability Act. 

Similar to the Powel court's description of Section 516.100 -- that the action accrued 

when "evidence was such to place a reasonably prudent person on notice of a potentially 

actionable injury," 197 S.W.3d at 582 -- the statute of limitations under FELA was 

described as beginning when a claimant knows or has reason to know that he has been 

injured and knows or has reason to know the cause of his injury. Reasons, 886 S.W.2d at 

109. 

In determining that the statute of limitations did not bar the action, the Reasons

court looked to case law including Elmore and Ray and held that precedent demonstrates 
14

that "it is not enough to suspect a problem and a causal connection to start the statute of 

limitations ticking; one must either know of the problem and the probable connection or 

actively ignore a manifest problem which would be apparent to a reasonable person." Id.

at 108. In so holding, the court "refuse[d] to abrogate a person's cause of action when it 

was unclear whether the employee was truly aware of the permanency of the problem." 

Id. at 109. "While there is no question employee knew his occupational conditions 

irritated him when he was at work, in order to find the statute of limitations has expired, 

we must find employee was aware he had sustained permanent damage that would not go 

away when he left his job site." Id. See also Kestner v. Mo. Pac. R.R. Co., 785 S.W.2d 

646 (Mo. App. E.D. 1990) (in examination of FELA statute of limitations, court 

recognized Elmore and held that trier of fact should decide when railroad employee knew 

or should have known that employment was the cause of his hearing loss).

In Grady v. Amrep, Inc., the Eastern District was faced with another chemical 

exposure case. 139 S.W.3d 585 (Mo. App. E.D. 2004). There, the plaintiff leased space 

for a clothing store. Id. at 587. On June 3, 1989, she was exposed to Limo Sol, a 

turpentine-like chemical, which was being applied to a tile floor in a space adjacent to her 

store. Id. As a result of that exposure, she saw a doctor on June 9, 1989. On June 2, 

1994, she filed suit for injuries caused by her exposure to the chemical, voluntarily 

dismissed that action, then re-filed on January 21, 1997. The plaintiff argued that her 

second action was within the five-year statute of limitations in part because she was not 

diagnosed with Chemical Sensitivities Syndrome until 1995. Id.
15

The Grady court began its analysis by noting that "damages are capable of being 

ascertained when a plaintiff having a recognized theory of recovery sustains compensable 

damages" and that "[d]amages are ascertained when the fact of damage appears rather 

than when the extent or amount of damage occurs." Id. at 588 (citations omitted). It 

analogized its facts to those where the fact of the damage and its cause were ascertainable 

at the moment of the injury. Id. (citing Newton v. BPS Guard Servs., Inc., 833 S.W.2d 

14, 16 (Mo. App. W.D. 1992) (statute of limitations barred action because it began 

running at the moment a man was shot, not when he later discovered he sustained 

permanent paralysis) and Allison v. Mo. Power & Light Co., 59 S.W.2d 771, 773 (Mo. 

App. St.L. 1933) (statute of limitations barred action where man was struck by metal bar 

because even though extent of disability was not known, the damages pled were merely 

"aggravating circumstances enhancing the legal injury already inflicted")). The Grady

plaintiff argued that her damages were not ascertainable until the time of her diagnosis in 

1995, but the Grady court found Elmore and Reasons inapposite. The court noted that 

Elmore involved an occupational disease and that the trigger was the diagnosis because 

that was when the character of the condition first came together with its cause. Id. at 589 

(citing Elmore, 673 S.W.2d at 436). The court distinguished Reasons on the grounds that 

there the plaintiff "felt fine" when not at work and only speculated that his work 

environment was triggering his reaction, whereas the Grady plaintiff "knew immediately 

that she was exposed to Limo Sol and that it caused her reactions." Id. 

Grady is not the only case to hold that a cause of action can be capable of 

ascertainment prior to diagnosis. See Johnson v. Norfolk & W. Ry. Co., 836 S.W.2d 83, 
16

86 (Mo. App. E.D. 1992) (in examination of FELA statute of limitations, court rejected 

argument that statute does not begin to run until the injured party has actual knowledge of 

his injury and its cause; a plaintiff has an affirmative duty to investigate his injury and 

any suspect cause once he experiences symptoms); Lockett v. Owens-Corning Fiberglas,

808 S.W.2d 902, 908 (Mo. App. E.D. 1991) (statute of limitations began to run when 

asbestosis was diagnosed in 1979, even though another physician reviewed the records 

and determined that it was not correctly diagnosable until 1988). 

Applying the reasoning from those cases to the facts at hand, we review the 

following facts, viewed in accordance with our standard of review, in the light most 

favorable to Giles: Giles worked for Ventura Foods and was exposed to diacetyl from 

1997 until 2003. Two years into his job as a welder there, he began to experience 

shortness of breath, coughing, and wheezing. He was referred to a board-certified 

pulmonologist, Dr. Yagan, in 2001. Not long after he was referred to the pulmonologist, 

Giles and Dr. Yagan learned of a potential connection between diacetyl and interstitial

lung disease or bronchiolitis obliterans, and that Giles was exposed to diacetyl. Dr. 

Yagan ruled out interstitial lung disease, but he did not have evidence to diagnose 

bronchiolitis obliterans, and he determined that Giles's symptoms most likely were not

due to occupational hazard. Based on his examination and treatment of Giles, Dr. Yagan 

diagnosed asthma, a different lung disease than bronchiolitis obliterans. It is true that Dr. 

Yagan testified that he was willing to consider looking further into the possibility that the 

symptoms were due to occupational hazard, but that statement was qualified by the 

condition that Giles's cough not abate. Dr. Yagan cleared Giles to return to work because 
17

he did not believe there was a connection between his symptoms and his work. Giles did 

not return to Dr. Yagan because his breathing got better and he saw no reason to return;

in addition he had no health insurance. Some three or four years later, another 

pulmonologist, presented with the same possible connection between Giles's lung 

problems and an occupational hazard, examined Giles but diagnosed him with asthma. 

No doctor diagnosed Giles with bronchiolitis obliterans due to exposure to diacetyl prior 

to Dr. Parmet's 2011 diagnosis.

Although it may be the case that a reasonably prudent person in Giles's position 

would have been on notice of a potentially actionable injury prior to 2007, pursuant to the 

case law discussed above, this conclusion does not follow as a matter of law. 

Respondents have failed to put forth any evidence that in fact Giles's bronchiolitis 

obliterans was a diagnosable condition or capable of ascertainment at that time. The 

record indicates only that Giles wondered whether his symptoms were due to his 

exposure to diacetyl and that upon informing his physicians of the possible connection, 

neither of two specialists was able to diagnose him with a lung condition related to that 

exposure at least as of 2005. The first two specialists who treated Giles were unable to

diagnose bronchiolitis obliterans even though they were made aware of the potential 

occupational hazard. Under these facts, we cannot find as a matter of law that Giles's

cause of action accrued prior to 2007. 

In so holding, we reject the argument that summary judgment should be affirmed 

because the medical community was aware of the potential that diacetyl exposure could 

cause lung disease in 2001 and thus that Giles was on notice of a potentially actionable 
18

claim at that time. Respondents note that in the proceedings below, Giles provided 

several studies, journal articles, and other materials in support of his contention that 

exposure to diacetyl can cause injury. Respondents note too that some of those materials 

pre-date 2007 and some pre-date 2004. 

In support of the argument that the medical community was aware of the 

connection and thus that Giles was on notice of a claim as of 2001 (or at least prior to 

January 4, 2007), Respondents rely heavily on Ahearn v. Lafayette Pharmacal, Inc., a 

medical malpractice case. 729 S.W.2d 501 (Mo. App. E.D. 1987). There, the plaintiff 

experienced back problems because of a work-related accident and an automobile 

accident. The plaintiff underwent diagnostic procedures in which a dye was injected into 

her spinal canal on three occasions. Id. at 502. After two surgeries, she was diagnosed 

with arachnoiditis, which was caused by the dye. Id. at 503. However, the plaintiff was 

unaware of her diagnosis for several years, and there was testimony that she could not 

have known her diagnosis of arachnoiditis was from anything other than trauma until 

more than five years after she was diagnosed. Id. Noting that the "capable of 

ascertainment" standard is an objective test, the Ahearn court held that a plaintiff's 

ignorance of the cause of her disease (and thus her cause of action) did not prevent the 

running of the statute in part because the connection between arachnoiditis and the dye 

had been known for several decades. Id. See also Buttice v. G.D. Searle & Co., 938 

F.Supp. 561, 567 (E.D. Mo. 1996) (where plaintiff was diagnosed in 1981 and causal 

theory was capable of ascertainment at least by the mid-1980s, court held that action filed 

in 1994 was barred); King v. Nashua Corp., 587 F.Supp. 417, 419 (E.C. Mo. 1984) 
19

(where articles had alleged a correlation between products and "injuries such as 

plaintiff's" more than five years before action was filed, plaintiff's action was barred).

Ahearn, however, is not on point and does not aid Respondents. In Ahearn, the 

plaintiff was diagnosed with the condition which gave rise to a cause of action --

arachnoiditis -- more than five years before she filed her suit, and the connection between 

arachnoiditis and the dye had been known in the scientific community for several 

decades. In holding that the statute of limitations barred the action, the Ahearn court 

noted that the "test to determine when a cause of action has accrued is to ascertain the 

time when plaintiff could have first maintained the action to a successful result." 729 

S.W.2d at 503. In the case at bar, based on the articles in the record, not only was the 

scientific community only beginning to piece together a connection between the 

bronchiolitis obliterans and diacetyl when Giles began showing symptoms of lung 

disease, two different pulmonologists examined Giles, and although each was made 

aware of a potential connection between the occupational exposure to diacetyl and Giles's 

lung problems, neither diagnosed Giles with bronchiolitis obliterans and neither 

connected his lung problems to his workplace. In 2002, Dr. Yagan cleared Giles to return 

to work because he did not believe there was a connection. And in 2005, another 

pulmonologist saw absolutely no connection. The record simply does not bear out, as a 

matter of law, that Giles could have maintained the action to a successful result prior to 

2007, unlike in Ahearn, where the plaintiff's medical record contained a diagnosis and the 
20

science had long provided a causal connection between the diagnosis and the alleged 

wrong.

9

As noted above, the burden of establishing a right to judgment as a matter of law 

lies squarely with the Respondents. And, as the statute of limitations is an affirmative 

defense under Rule 55.08, Respondents bear the burden of showing that it bars Giles's

claims. Powel, 197 S.W.3d at 580. Here, Respondents have not met their burden of 

showing that Giles's condition was capable of ascertainment prior to when it in fact was 

diagnosed in 2011. Instead, whether the cause of action was capable of ascertainment 

remains a factual issue. "[W]hen contradictory or different conclusions may be drawn 

from the evidence as to whether the statute of limitations has run, it is a question of fact 

for the jury to decide." Powel, 197 S.W.3d 585.

This point is granted.

Conclusion

The judgment of the trial court is reversed and the cause remanded for further 

proceedings consistent with this opinion.

__________________________________

Gary D. Witt, Judge

All concur

 

9 The viability of Ahearn was called into question by Miller v. Mobay Corp., 741 F.Supp. 177, 178 (W.D. 

Mo. 1990), where the judge was "deeply skeptical that Ahearn appropriately predicts where Missouri law is likely to 

find repose. . . . [because] I now conclude that medical community knowledge of possible causation is inconclusive" 

for accrual purposes.).