bluuebunny/crossref_metadata_2025_split huggingface dataset:
Osteoblastoma of the nasal cavity arising from the perpendicular plate of the ethmoid bone
Authors: Velegrakis George A. , Prokopakis Emmanuel P. , Papadakis Chariton E. , Karampekios Spyros K. , Koutsoubi Katerina G. , Helidonis Emmanuel S. 
Published: November 2007

AbstractThe presence of a benign osteoblastoma in the ethmoid sinus is rare and only a few cases have been reported. This is a case of a benign osteoblastoma arising from the perpendicular plate of the ethmoid bone with extension to the nasal cavity. The diagnosis and management of this unusual lesion, as well as the histopathology and the imaging characteristics are reviewed. We also review the previously reported cases of benign osteoblastomas of different origin, with nasal cavity involvement.
Vestibular schwannoma showing a dural tail on contrastenhanced magnetic resonance images
Authors: Noguchi Yoshihiro , Komatsuzaki Atsushi , Yamada Ichiro , Okuno Hideji , Haraguchi Hidetoshi 
Published: November 2007

AbstractThe dural tail on contrast-enhanced magnetic resonance (MR) images, frequently observed in meningiomas, has been used to distinguish between cerebellopontine angle meningiomas and vestibular schwannomas. We report on a 66-year-old female with vestibular schwannoma showing the dural tail on contrast-enhanced MR images. Histological examination revealed that the dural tail corresponded to the thickened dura mater comprising of collagen fibres and scattered hyalinization with no tumoral invasion.
Cystadenoma of the parotid gland with unusual prominent lymphoid stroma
Authors: Pahl Stefan , Püschel Werner , Federspil Philippe 
Published: November 2007

AbstractA rare variant of the cystadenoma of salivary gland origin is presented, which occurred in the parotid of a 36-year-old, otherwise healthy female patient. The tumour showed a dense follicle-containing lymphoid stroma, resembling papillary cystadenoma lymphomatosum (Warthin's tumour). In contrast to that, the epithelial lining gave a more irregular impression and oncocytic metaplasia were completely absent. Light microscopic and immunohistochemical features of the tumour are described and compared with those of classical cystadenoma and papillary cystadenoma lymphomatosum (Warthin's tumour). Other relevant multicystic epithelial parotid lesions, which are commonly associated with a prominent lymphoid component are discussed.
Surgery of tympanosclerosis
Authors: Kamal Syed Akhtar 
Published: November 2007

AbstractEighty-five cases with tympanosclerosis of the middle ear were treated surgically in this series from 1984 to 1995. Twelve of them were associated with cholesteatoma and had radical surgery performed. An attempt is made here to classify the tympanosclerosis on a patho-physiological basis. A planned two-stage procedure was performed in 36 cases after an interval of 18 months. The majority of patients had stapes surgery carried out by a two-stage procedure. One of the patients who did not have stapes surgery developed anacusis after 18 months post-operatively and in another patient recurrence was observed. Post-operative hearing improvement was found to be satisfactory in the short-term follow-up period of two to five years. The hearing improvement was analysed by using Chi-square value (x2) and also plotted in the Glasgow Benefit Plot.
Further experience with a straight, vertical incision for placement of cochlear implants
Authors: Gibson W. P. R. , Harrison H. C. 
Published: November 2007

AbstractExperience with a straight, vertical incision for cochlear implantation in 168 patients of all ages is reported and comparison made with previous experience using a 'C' shaped incision in 173 patients with regard to complications encountered. With the straight incision the only complication was a wound infection which settled in one week; this is in contrast to the 'C'shaped incision, which was associated with a number of serious complications. The straight incision also compared favourably with the other incisions commonly used for cochlear implantation and appears to offer advantages over them.
Carbon dioxide laser turbinectomy. An electron microscopic study
Authors: Elwany Samy , Abdel-Moneim M. Hesham 
Published: November 2007

AbstractTen patients with chronic non-allergic rhinitis and presenting mainly with nasal obstruction due to hypertrophied inferior turbinates were subjected to laser turbinectomy using CO2. Tiny biopsies were taken, at the time of surgery as well as one monthlater, and were processed for transmission electron microscopy. The ultrastructural observations included: early epithelial loss which wasfollowed by prompt regeneration of healthy epithelium, decreased number and activity of the seromucinous glands, fibrosis of the connective tissue stroma, as well as diminished number and congestion of the cavernous blood spaces. These observations were discussed in view of the excellent clinical response of the patients.
The use of magnetic resonance imaging to assess tracheal stenosis following percutaneous dilatational tracheostomy
Authors: Callanan Vincent , Gillmore Kaie , Field Stuart , Beaumont Anthony 
Published: November 2007

AbstractThe incidence of tracheal stenosis following conventional tracheostomy has been reported as lying between one and 30 per cent. Methods used to assess the degree of stenosis include CT scanning, fibreoptic visualization and plain X-ray tomographs. The aim of this study was to assess the degree of stenosis in patients following percutaneous dilatational tracheostomy (PDT) using MRI scanning. This method has not been reported in the literature previously. Nine patients without symptoms of tracheal stenosis were studied for at least six months following PDT performed in the intensive therapy unit. The tracheas were assessed for scarring and stenosis using a three dimensional volume scanning MRI technique. Although scarring could be detected in the wall of the trachea and subcutaneous tissues of all patients, tracheal stenosis was not demonstrated at the insertion site or at the site of the cuff (p>0.05). MRI scanning provides an excellent non-invasive method of assessing the tracheal lumen. Our patients who had undergone PDT do not appear to have any degree of post-operative stenosis.
Orbital decompression for thyroid eye disease: a comparison of external and endoscopic techniques
Authors: Lund Valerie J. , Larkin Genevieve , Fells Peter , Adams Gillian 
Published: November 2007

AbstractThe results of orbital decompression for thyroid eye disease are presented in a cohort of 33 patients. It was performed by an external Patterson approach in 21 individuals and in 13 by an endonasal endoscopic approach. The endoscopic approach was entirely comparable in respect of improvement in axial proptosis, giving a mean improvement of 4.4 mm as compared with a mean of 3.8 mm for the external approach, and produced a demonstrable improvement in visual acuity and perception of colour in three individuals, where this was compromised, and was associated with fewer complications.
The response of adenoid cystic carcinoma to tamoxifen
Authors: Shadaba A. , Gaze M. N. , Grant H. R. 
Published: November 2007

AbstractAdenoid cystic carcinoma of the parotid gland often recurs locally, or metastases develop, after initial treatment with surgery and radiotherapy. We report a patient with an inoperable local recurrence of previously irradiated adenoid cystic carcinoma, who was treated with tamoxifen, an oestrogen receptor antagonist. After 18 months of treatment with tamoxifen, MRI showed a partial response, and further clinical progression of the disease was halted.
Long-term observation after soft posterior meatal wall reconstruction in ears with cholesteatoma
Authors: Hosoi Hiroshi , Murata Kiyotaka , Kimura Hiroki , Tsuta Yoshiaki 
Published: November 2007

AbstractWe performed tympanoplasty with reconstruction of the soft posterior meatal wall for the prevention of post-operative retraction pocket formation. Our method is characterized by the reconstruction of the softposterior meatal wall, non-obliteration with permanent or temporary materials, including Gelfoam, no use of a Palva flap and the use of fibrin glue for attaching the fascia to the posterior meatal skin. None of the patients experienced post-operative narrow-neck retraction pocket formation, and whenever aeration of the middle ear was disturbed, a balloon-like retraction was observed. Not all the posterior meatal walls retracted. The final position of the posterior meatal wall varied among the subjects. No serious cavity or hearing problems have occurred since surgery. Due to the strong possibility of post-operative retraction pocket formation in cases with a large balloon-like retraction, we rejected adopting the canal wall up technique or hard posterior meatal wall reconstruction.
Skull base osteitis following fungal sinusitis
Authors: Swift Andrew C. , Denning David W. 
Published: November 2007

AbstractAspergillus sp. sinusitis is not uncommon in immunocompromised patients but is unusual in patients who are not immunocompromised. The disease may occur as a saprophytic condition, as an allergic sinusitis or as a potentially lethal invasive disease. The differentiation between non-invasive and invasive Aspergillus sp. sinusitis is crucial and this distinction is fully discussed. The treatment options are also considered. Invasive disease requires aggressive treatment with long-term antifungal agents in sufficient doses combined with wide surgical excision.We present a patient who presented with invasive Aspergillus fumigatus sinusitis and subsequently developed cranial neuropathies and skull base osteitis. She was initially treated with oral itraconazole (400 mg daily) for 18 months but due to lack of response this was changed to a new experimental oral azole (voriconazole) which was continued for a further 14 months. She has since remained well for the last five years.
Hodgkin's lymphoma of the nasopharynx
Authors: Molony N. C. , Stewart A. , Ah-See K. , McLaren M. 
Published: November 2007

AbstractThe lymphoid tissues of Waldeyer's ring, including the nasopharynx, are very rare sites for Hodgkin's disease and are considered to be relatively resistant to it. This report of a case of Hodgkin's disease of the post-nasal space demonstrates the difficulty of making the diagnosis histologically and the characteristic immunohistochemical features of this disease.Before immunohistochemistry became so widely available, some authors speculated it might be underdiagnosed (Eavey and Goodman, 1982; O'Reilly and Kershaw, 1987). Judging by its continued rarity, this appears not to be the case.
Metastasizing malignant oncocytoma of the submandibular gland
Authors: Mahnke C. G. , Jänig U. , Werner J. A. 
Published: November 2007

AbstractMalignant oncocytomas are extremely rare tumours of the salivary glands. Fewer than 50 cases have been reported in the world literature so far, 34 of which were located in the parotid gland. Only three of these tumours have been located in the submandibular gland. We report one further case of a malignant oncocytoma of the submandibular gland in a 47-year-old man. Since a definite histological diagnosis of malignant oncocytoma can rarely be made both clinical and histopathological findings are essential in establishing the diagnosis. Treatment consists of wide surgical excision, neck dissection and post-operative radiotherapy. The prognosis with regard to five-year survival is poor becauseof metastatic disease.
Solitary plasmacytoma of the epiglottis: a case report and review of the literature
Authors: Welsh James , Westra William H. , Eisele David , Hogan Robert , Lee Ding-Jen 
Published: November 2007

AbstractA 59-year-old white male presented with a two-month history of dry cough and shortness of breath. At bronchoscopy, a 1 cm mass on the laryngeal surface of the epiglottis was found. Immunohistochemical stain of the biopsy specimen revealed a monoclonal proliferation of plasma cells. Serological tests revealed normal serum immunoglobulin levels, and a bone marrow aspirate and biopsy was also normal; no abnormalities were found on serum or urine electrophoresis. He received radiotherapy (50 Gy), and was doing well three years following therapy without evidence of disease.
Multiple malignancies in a patient with bilateral retinoblastoma
Authors: Eha H. M. , Balm A. J. M. , de Jong D. , Van't Veer L. J. 
Published: November 2007

AbstractA case is presented of a patient with bilateral retinoblastoma, treated at infancy with surgery, chemotherapy and radiotherapy, who subsequently developed at least four additional histologically distinct malignancies: a Ewing sarcoma of the left fibula, two extraskeletal osteosarcomas of the left lower extremity, a mucoepidermoid carcinoma of the right parotid gland and a squamous cell carcinoma of the left paranasal cavity.In addition to retinoblastoma, patients with a germline RB-1 mutation are at high risk of second primary malignancies. An additive carcinogenic effect of cytotoxic therapy in these patients has been assumed. Patients with hereditary retinoblastoma should be under life-long follow-up programmes including a regular head and neck examination for detection of new primaries, especially in the radiation field of the presenting retinoblastoma.
An unusual cause of acute labyrinthine failure
Authors: Mehta J. S. , Sharr M. M. 
Published: November 2007

AbstractWe report a case of a 40-year-old man presenting with acute vertigo and deafness. Computed tomography (CT) scanning at initial presentation was normal. However, one year later he developed numbness on the right side of his face and examination revealed fifth, seventh and eighth cranial nerve palsies as well as cerebellar dysfunction. Magnetic resonance imaging (MRI) demonstrated a cerebellopontine angle lesion. He underwent near total excision followed by neuro-axis irradiation. The main mass of the tumour projected into the cerebellopontine angle. Histology showed this to be a medulloblastoma. All features of this case are unusual; hence we discuss the pathogenesis and management of this very rare tumour.
The usefulness of computed tomography in the diagnosis of impacted fish bones in the oesophagus
Authors: Watanabe Ken-ichi , Kikuchi Toshihiko , Katori Yukio , Fujiwara Hiroko , Sugita Reiji , Takasaka Tomonori , Hashimoto Sho 
Published: November 2007

AbstractThe usefulness of computed tomography (CT) in the diagnosis of fish bone impaction in the oesophagus was evaluated. Thirty-two patients were examined by plain X-ray followed by direct oesophagoscopy for suspected fish bone impaction. Among 25 cases in which fish bones were actually removed, foreign bodies were not clearly demonstrated by plain X-ray in 14 cases (56 per cent). Eleven cases underwent CT prior to the oesophagoscopic examination. Fish bones were clearly demonstrated by CT in all patients. CT also clearly visualized secondarily-induced inflammatory changes in the neighbouring structures. In order to confirm this result, we made a simulation model of oesophageal fish bone impaction, using fish bones of three different species surrounded by a water bag. In comparison with plain X-ray, CT depicted a superior image of fine fish bones and provides extremely useful information for the management of impacted fish bones in the oesophagus.
Ortner's syndrome revisited
Authors: Sengupta A. , Dubey S. P. , Chaudhuri D. , Sinha A. K. , Chakravarti P. 
Published: November 2007

AbstractHoarseness of voice due to paralysis of the left recurrent laryngeal nerve caused by a dilated left atrium in mitral stenosis as discussed by Ortner, is a subject of controversy. Different authors have cited different mechanisms as explanation. A variety of cardiac problems such as primary pulmonary hypertension, ischaemic heart disease, various congenital heart disorders can all lead to paralysis of the left recurrent laryngeal nerve. Most authors believe that pressure in the pulmonary artery causes the nerve compression. In Papua New Guinea cor pulmonale and rheumatic heart disease are the commonest cardiac disorders seen. Ortner's syndrome is a rarity and has never been reported from here before. Here three different case reports are presented with mitral stenosis, primary pulmonary hypertension and combined mitral stenosis and regurgitation and the pathogenesis of hoarseness is discussed.
Cochlear implantation under local anaesthesia, the Belfast experience
Authors: Toner J. G. , John G. , McNaboe E. J. 
Published: November 2007

AbstractThe profoundly deaf, who gain little or no benefit from conventional hearing aids and meet various criteria are potential candidates for cochlear implantation. The last two decades have witnessed remarkable progress in this field, and it is now a routine clinical procedure. A few adult patients who are potential candidates for cochlear implantation have an unacceptably high risk for hypotensive general anaesthesia due to other systemic conditions. This group has been successfully implanted under local anaesthesia in our centre. The post-implantation progress of these patients was comparable to those carried out under hypotensive general anaesthesia. Data regarding patient selection criteria, examination, anaesthesia, surgery and the outcome are discussed. It was concluded that cochlear implantation under local anaesthesia is a safe and effective procedure for those patients who otherwise may be denied an implant.
The ‘swing-door’ technique for uncinectomy in endoscopic sinus surgery
Authors: Wormald P. J. , McDonogh Mike 
Published: November 2007

AbstractUncinectomy is an important step in endoscopic sinus surgery. The traditional method of performing uncinectomy has the risk of penetration of the lamina papyracea with orbital fat exposure. If the orbital penetration is not recognized, major complications may follow. In this study the authors used historical consecutive controls to compare the incidence of orbital penetration, identification of the natural ostium and lacrimal apparatus injury by the traditional surgical technique and a new technique of uncinectomy. Six hundred and thirty-six uncinectomies have been performed using the ‘swing-door’ technique. The 636 uncinectomies performed prior to changing techniques were used as historical controls. The incidence of orbital penetration (six compared to 0;p<0.05) and ostium non-identification (42 not identified as compared to 0;p<0.001) was significantly less with the new technique. One lacrimal injury occurred with the ‘swing-door’ technique compared to zero with the standard technique (p>0.05). The techniques are described and the complications discussed. The authors recommend this technique as it is easy to learn, allows removal of the uncinate flush with the lateral nasal wall and allows easy identification of the natural ostium of the maxillary sinus.
Serum antibodies to human herpesvirus 7, human herpesvirus 6 and cytomegalovirus in patients with idiopathic facial nerve palsy or sudden deafness
Authors: Takasaki Tomohiko , Higashikawa Masahiko , Motoyama Soichi , Sugita Kunihiro , Kurane Ichiro 
Published: November 2007

AbstractThe aetiology of idiopathic facial nerve palsy (Bell's palsy) and sudden deafness are not known, although viruses have been suspected as a cause of them. We investigated the relationship between Bell's palsy or sudden deafness, and reactivation of cytomegalovirus, human herpesvirus 6 (HHV-6) and 7 (HHV-7).Paired sera were collected from 22 patients with Bell's palsy and 24 patients with sudden deafness. IgG antibody titres to HHV-7 were increased in one patient with Bell's palsy. IgG antibody titres to HHV-6 were increased in one patient with Bell's palsy and two with sudden deafness. IgG antibody titres to cytomegalovirus were increased in one patient with sudden deafness. Titres of the three viral antibodies were not increased simultaneously in any patients. These viruses may contribute to the development of Bell's palsy or sudden deafness in some cases. It is, however, unlikely that these viruses are the main cause of Bell's palsy and sudden deafness in the majority of patients.
Cochlear implant failure due to unexpected absence of the eighthnerve – a cautionary tale
Authors: Gray R. F. , Ray J. , Baguley D. M. , Vanat Z. , Begg J. , Phelps P. D. 
Published: November 2007

AbstractWe present a case of bilateral absence of the eighth cranial nerve in the internal auditory meatus (IAM). This caused total failure of responses after cochlear implantation in a six-year-old patient with congenital deafness. Pre-operative magnetic resonance (MR)imaging is important to show not only the anatomy of the middle and inner ears but also the structures in the IAM.
Middle ear mechanics in normal, diseased and reconstructed ears
Authors: Merchant Saumil N. , Ravicz Michael E. , Voss Susan E. , Peake William T. , Rosowski John J. 
Published: November 2007

AbstractA review of the structure-function relationships in normal, diseased and reconstructed middle ears is presented. Variables used to describe the system are sound pressure, volume velocity and acoustic impedance. We discuss the following(1) Sound can be transmitted from the ear canal to the cochlea via two mechanisms: the tympanoossicular system (ossicular coupling) and direct acoustic stimulation of the oval and round windows (acoustic coupling). In the normal ear, middle-ear pressure gain, which is the result of ossicular coupling, is frequency-dependent and smaller than generally believed. Acoustic coupling is negligibly small in normal ears, but can play a significant role in some diseased and reconstructed ears.(2) The severity of conductive hearing loss due to middle-ear disease or after tympanoplasty surgery can be predicted by the degree to which ossicular coupling, acoustic coupling, and stapes-cochlear input impedance are compromised. Such analyses are used to explain the air-bone gaps associated with lesions such as ossicular interruption, ossicular fixation and tympanic membrane perforation.(3) With type IV and V tympanoplasty, hearing is determined solely by acoustic coupling. A quantitative analysis of structure-function relationships can both explain the wide range of observed postoperative hearing results and suggest surgical guidelines in order to optimize the post-operative results.(4) In tympanoplasty types I, II and III, the hearing result depends on the efficacy of the reconstructed tympanic membrane, the efficacy of the reconstructed ossicular chain and adequacy of middle-ear aeration. Currently, our knowledge of the mechanics of these three factors is incomplete. The mechanics of mastoidectomy and stapedectomy are also discussed.
Surgery for acquired cholesteatoma in children: long-term results and recurrence of cholesteatoma
Authors: Stangerup Sven-Eric , Drozdziewicz Dominika , Tos Mirko , Trabalzini Franco 
Published: November 2007

AbstractThe aim of the study was to evaluate the long-term results after surgery for acquired cholesteatoma in children and to contribute to the search for predictors of recurrence. During a 15-year period, 114 children underwent surgery. The patients were re-evaluated with a median observation time of 5.8 years. At the last re-evaluation 85 per cent of the ears were dry with an intact drum. Recurrence of cholesteatoma developed in 27 ears. The cumulated total recurrence rate was 24 per cent using the incidence rate calculation, applying Kaplan-Meier survival analysis the corresponding recurrence was 33 per cent. Recurrent disease occurred significantly more frequently in children younger than eight years, with a negative pre-operative Valsalva, with ossicular resorption and with large cholesteatomas. In conclusion, young children with poor Eustachian tube function and a large cholesteatoma with erosion of the ossicular chain, are at special risk of recurrence and should be observed for several years after surgery.