1/70. Extracranial neurilemmoma: a case report and review of the literature.A 14-year-old male presented with a several month history of an asymptomatic right cervical swelling. An ultrasound scan showed a solid lesion superficial and superior to the thyroid gland. Surgical excision of the lesion was carried out and histological examination revealed a neurilemmoma. Neurilemmomas are relatively rare tumours and even rarer in children. The incidence of such tumours and the management of our patient are discussed.- - - - - - - - - - ranking = 1keywords = gland (Clic here for more details about this article) |
2/70. Retroperitoneal schwannoma presenting as an adrenal tumor.A retroperitoneal tumor in the region of the adrenal gland was diagnosed in a 56-year-old woman. The patient had been suffering from a dull abdominal pain for nearly four weeks before consulting her family physician. Ultrasound, CT and MRI scans revealed a giant tumor of the right adrenal gland. Endocrine activity could not be demonstrated. The size of the tumor was suggestive of an adrenal carcinoma. The patient was referred for adrenalectomy and complete exstirpation of the retroperitoneal mass. The histological examination revealed characteristical findings of a benign schwannoma.- - - - - - - - - - ranking = 2keywords = gland (Clic here for more details about this article) |
3/70. Primary neurilemoma of the thyroid gland: a case report.Primary nonepithelial tumors of the thyroid gland are rare. We present the case of a neurilemoma of the right lobe of the thyroid gland in a 20-year-old female patient. The tumor was asymptomatic and measured 2.5 x 1.2 cm in size. Histologic examination was consistent with an Antoni A-type neurilemoma. The tumor was excised without difficulty. Only 12 other cases of neurilemomas of the thyroid gland have been reported in the literature. We discuss the clinical, radiologic, and pathologic findings of this rare tumor.- - - - - - - - - - ranking = 7keywords = gland (Clic here for more details about this article) |
4/70. Laparoscopic management of a posterior mediastinal tumor mimicking an adrenal neoplasm.Background: Rarely, a posterior mediastinal mass may mimic an adrenal tumor on preoperative computed tomography scan. The intraoperative discovery that a mass thought to be associated with the adrenal gland actually is above the diaphragm in the posteroinferior mediastinum poses a challenge for the laparoscopic surgeon. Conversion to a thoracotomy or to videothoracoscopy incurs additional morbidity and risk for the patient. Materials and methods: We describe a technique for the transdiaphragmatic removal of a benign mass from the posterior mediastinum. A posterior mediastinal tumor was detected during a laparoscopic procedure for a suspected right adrenal tumor. Frozen section proved benign, and the mass was resected laparoscopically via transdiaphragmatic access to the posterior mediastinum. Results: No complications were noted during or after surgery. The patient was ready for discharge from the hospital on postoperative day 1. Conclusions: Transdiaphragmatic resection was done successfully instead of conversion to a thoracotomy or thoracoscopic procedure for a benign posterior mediastinal tumor found incidentally during laparoscopic surgery for a presumed adrenal lesion. This transdiaphragmatic approach can be applied to selected benign mediastinal masses.- - - - - - - - - - ranking = 1keywords = gland (Clic here for more details about this article) |
5/70. Neurinoma in the buccal mucosa.A 14-year-old girl was referred to our clinic with a problem of a painless slow growing lesion for approximately three years. MR imaging findings of lesion was "retention cyst of the salivary gland". Controversially, the histological examination of the total excised specimen was "neurinoma" and that was inconsistent with MR findings. Neural tissue tumors of the oral cavity are rare, however, this diagnosis was confirmed by surgical excision and histopathological examination. There was a rare location of the lesion as well.- - - - - - - - - - ranking = 1keywords = gland (Clic here for more details about this article) |
6/70. A neurilemmoma of the parotid gland: report of a case.Benign primary tumors of the facial nerve are frequently misdiagnosed because of the variety of their clinical manifestations. Much attention has been paid to neurilemmomas in the recent otolaryngologic literature, but far less has been focused on intraparotid facial nerve neurilemmomas. In this article, we describe a new case of this truly rare tumor, and we review its diagnosis, pathology, and treatment.- - - - - - - - - - ranking = 4keywords = gland (Clic here for more details about this article) |
7/70. Parasympathetic schwannoma of the submandibular gland.Schwannomas of the submandibular gland have only been documented sporadically throughout the medical literature. We describe a case of schwannoma of the submandibular gland originating from the submandibular branch of the lingual nerve, which carries the preganglionic parasympathetic nerve fibers. The clinical aspect of this tumor is discussed, followed by a brief literature review.- - - - - - - - - - ranking = 6keywords = gland (Clic here for more details about this article) |
8/70. Benign glandular schwannoma.Glandular schwannoma is a rare variant of schwannoma characterized by the presence of glands in an otherwise typical schwannoma. We report a patient with benign glandular schwannoma occurring on the scalp, a site not previously reported. Histologically, a well-defined, encapsulated oval nodule was observed in the subcutaneous tissue. The nodule was composed of a spindle cell component and glandular structures. The spindle cell component stained positively for S-100 protein. All of the glandular epithelium stained with CAM 5.2 and epithelial membrane antigen but not with S-100 protein. The glandular epithelium was focally positive for carcinoembryonic antigen. The histogenesis of the glandular elements in these tumours is still debated. The variable size of the glandular structures in our case was evidence against an entrapped normal sweat gland origin. The glandular epithelium did not stain with S-100 protein at all, but stained with CAM 5.2, which did not support a direct metaplastic origin of the epithelial elements from the schwannian component. A few scattered CAM 5.2-positive cells and microglandular structures in our case may be the initial differentiating epithelial elements possibly derived from pluripotential neural crest cells.- - - - - - - - - - ranking = 14keywords = gland (Clic here for more details about this article) |
9/70. Schwannoma of the seminal vesicle.A 79-year-old man presented with a history of nocturia. On rectal examination a solid mass above the prostate gland was discovered. Computerized tomography (CT) and ultrasound (US) showed that the mass was solid and was arising from the seminal vesicle. After a needle biopsy, pathology and immunocytochemistry confirmed the mass to be Schwannoma. Tumors of the seminal vesicle are rare. To our knowledge Schwannoma of the seminal vesicle has not been described before.- - - - - - - - - - ranking = 1keywords = gland (Clic here for more details about this article) |
10/70. Retroperitoneal schwannoma mimicking an adrenal lesion.Schwannomas are usually benign tumors that arise from the nerve supporting the Schwann cell. The majority arise at the cranial nerves or nerves of the upper extremities. Most patients with retroperitoneal schwannomas present with vague abdominal or back pain. We present a case in which a retroperitoneal mass thought to be arising from the adrenal gland on computed tomography and magnetic resonance imaging was found after excision to be a Schwannoma. The available literature on retroperitoneal schwannomas is then discussed.- - - - - - - - - - ranking = 1keywords = gland (Clic here for more details about this article) |
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