Clinical trial NCT05246319: Preoperative Imaging in Patients With Small Bowel Neuroendocrine Tumors
Official title: Evaluation of Preoperative Imaging (CT Scan, DOPA-PET and DOTATOC) in Patients With Small Bowel Neuroendocrine Tumors
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Neuroendocrine Tumors
Small Intestinal NET
Lymph Node Metastasis
Keywords: Neuroendocrine Tumors
Small Intestinal NET
Lymph Node Metastasis
Radionuclide Imaging
CT scan
Lead sponsor: Central Hospital, Nancy, France
Sponsor class: OTHER
First posted: 2022-02-18
Enrollment: 50
Sex: ALL
Minimum age (years): 16
Maximum age (years): 95
Standard ages: CHILD
ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Patients with neuroendocrine tumors who underwent a scheduled surgical procedure for small bowel resection

Brief summary: Digestive NETs are the second most common malignant digestive tumor after adenocarcinoma. The most common gastrointestinal NETs arise from the small intestine. These tumors have a high lymph node and distant metastatic potential (hepatic, pulmonary, etc.). Their management is essentially surgical and the extent of the resection essentially depends on preoperative data from conventional and isotopic imaging.

The goal of surgical resection is to remove the portion of the small intestine carrying the tumour(s) with healthy margins (so-called R0 resection) and affected lymph nodes in the mesentery (lymph node dissection). The extent of lymph node dissection, sometimes significant, exposes you to the risk of short hail with its own complications (malnutrition, diarrhoea, etc.). Consequently, an analysis of the benefits and risks between the interest of an extensive and oncological resection (R0) and the risks of short bowel must be carried out for each patient.

The reference examination to define lymph node involvement is determined by the histological examination of the resected surgical specimen (reference examination). The preoperative evaluation of lymph node extension is done by preoperative abdominal CT scan. However, the preoperative CT scan is not always consistent (sensitivity and specificity) with the pathology data (reference examination). For about 5 years, isotopic imaging (DOPA-PET and DOTATOC) has become feasible and could improve the quality of preoperative evaluation of lymph node extension. Consequently, the aim of this study is to determine the contribution of isotopic imaging (DOPA-PET and DOTATOC) in the preoperative evaluation of lymph node extension.

Detailed description: Digestive neuroendocrine tumors (NET) are developed from neuroendocrine cells, of epithelial origin, scattered throughout the digestive tract. These tumors form a heterogeneous group defined according to the site of origin, the cell type affected, the functional character or not, the cell differentiation (morphology), and finally the potential for tumor progression and aggressiveness. Digestive NETs are the second most common malignant digestive tumor after adenocarcinoma. The most common gastrointestinal NETs arise from the small intestine. These tumors have a high lymph node and distant metastatic potential (hepatic, pulmonary, etc.). Their management is essentially surgical and the extent of the resection essentially depends on preoperative data from conventional and isotopic imaging. The goal of surgical resection is to remove the portion of the small intestine carrying the tumour(s) with healthy margins (so-called R0 resection) and affected lymph nodes in the mesentery (lymph node dissection). The extent of lymph node dissection, sometimes significant, exposes you to the risk of short hail with its own complications (malnutrition, diarrhoea, etc.). Consequently, an analysis of the benefits and risks between the interest of an extensive and oncological resection (R0) and the risks of short bowel must be carried out for each patient.

The reference examination to define lymph node involvement is determined by the histological examination of the resected surgical specimen (reference examination). The preoperative evaluation of lymph node extension is done by preoperative abdominal CT scan. However, the preoperative CT scan is not always consistent (sensitivity and specificity) with the pathology data (reference examination). For about 5 years, isotopic imaging (DOPA-PET and DOTATOC) has become feasible and could improve the quality of preoperative evaluation of lymph node extension. Consequently, the aim of this study is to determine the contribution of isotopic imaging (DOPA-PET and DOTATOC) in the preoperative evaluation of lymph node extension.

Eligibility criteria: Inclusion Criteria:

* Patients with neuroendocrine tumors who underwent a scheduled surgical procedure for small bowel resection

Exclusion Criteria:

* patients without preoperative CT scan
* patients with abdominal resection performed in emergency

Primary outcomes:
measure: mesenteric lymph nodes
timeFrame: before surgical procedure
Secondary outcomes:
measure: comparison
timeFrame: before surgical procedure
Other outcomes:
Locations:
city: Nancy
country: France
facility: CHRU Nancy
city: Nancy
country: France
facility: CHRU Nancy - Département Chirurgie Viscérale, Métabolique et Cancérologique CVMC (7ème étage)
Study officials:
affiliation: CHRU Nancy
name: laurent Brunaud, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Deguelte S, Hammoutene C, Poncet G, Brunaud L, Perrier M, Kianmanesh R, Cadiot G. Concept of reintervention with thorough lymphadenectomy after suboptimal resection of small-intestine neuroendocrine neoplasms: A multicentre preliminary study. J Neuroendocrinol. 2022 Jun;34(6):e13117. doi: 10.1111/jne.13117. Epub 2022 Apr 18.
citation: Mocellin S, Nitti D. Gastrointestinal carcinoid: epidemiological and survival evidence from a large population-based study (n = 25 531). Ann Oncol. 2013 Dec;24(12):3040-4. doi: 10.1093/annonc/mdt377. Epub 2013 Sep 19.
citation: Dasari A, Shen C, Halperin D, Zhao B, Zhou S, Xu Y, Shih T, Yao JC. Trends in the Incidence, Prevalence, and Survival Outcomes in Patients With Neuroendocrine Tumors in the United States. JAMA Oncol. 2017 Oct 1;3(10):1335-1342. doi: 10.1001/jamaoncol.2017.0589.
citation: Keck KJ, Maxwell JE, Utria AF, Bellizzi AM, Dillon JS, O'Dorisio TM, Howe JR. The Distal Predilection of Small Bowel Neuroendocrine Tumors. Ann Surg Oncol. 2018 Oct;25(11):3207-3213. doi: 10.1245/s10434-018-6676-2. Epub 2018 Jul 27.
citation: Moertel CG. Karnofsky memorial lecture. An odyssey in the land of small tumors. J Clin Oncol. 1987 Oct;5(10):1502-22. doi: 10.1200/JCO.1987.5.10.1502. No abstract available.