Adrenal malignant melanoma masquerading as a pheochromocytoma in a patient with a history of a multifocal papillary and medullary thyroid carcinoma.

Objective: Adrenal masses usually represent benign and nonfunctional adrenal adenomas; however, primary or metastatic malignancy should also be considered. Discovery of an adrenal mass needs further evaluation in order to exclude malignancy and hormonal secretion. We present a rare case of a possibly primary adrenal malignant melanoma with imaging and biochemical features of a pheochromocytoma.

Laryngeal dysplasia: a long-term follow-up study.

Purpose: To assess the progression of precancerous laryngeal lesions to squamous cell carcinoma (SCC), defined by specific histopathological criteria, in patients with longterm follow-up.

Methods: Patients with laryngeal dysplasia, followed/ treated between 1985 and 2008, were retrospectively evaluated and classified according to the World Health Organization classification system (WHO). The investigated outcome parameters were progression of dysplasia to SCC, time interval to malignant transformation and continuation of smoking as potential risk factors.

Paraganglioma of the greater omentum: Case report and review of the literature.

Background: Extra-adrenal, intra-abdominal paraganglioma constitutes a rare neoplasm and, moreover, its location in the greater omentum is extremely infrequent.

Case Presentation: A 46-year-old woman with an unremarkable medical history presented with an asymptomatic greater omentum mass that was discovered incidentally during ultrasonographic evaluation due to menstrual disturbances. Clinical examination revealed a mobile, non-tender, well-circumscribed mass in the right upper and lower abdominal quadrant.

Postchemotherapy resection of a primary mature malignant retroperitoneal teratoma in an adult: report of a case.

We herein report a rare case of a 47-year-old man with a primary mature retroperitoneal malignant teratoma. The patient received neoadjuvant chemotherapy and the residual tumor was resected. A histopathological examination confirmed the diagnosis of malignant teratoma with endodermal, ectodermal, and mesenchymal structures.