ectopic thyroid tissue results from abnormal embryologic development and migration of the thyroid gland. true malignant transformation in ectopic thyroid tissue is extremely rare and is always diagnosed after surgical excision of the lesion by pathology examinations. there are well-documented cases of ectopic thyroid cancer while primary tumoral lesion occurs in the orthotopic thyroid, but only...

Clinicopathologic correlation of five cases of cystadenomas of the liver are reported. All patients were female and radical surgical procedure, total excision or resection was performed four times, and partial excision once. In all patients the postoperative course was uneventful and they are all alive and well. Examined by conventional histological and special immuno-histochemical stains the t...

the association of squamous cell carcinoma of the larynx with thyroid papillary carcinoma is an unusual finding. from 2004 to 2011, approximately 250 patients underwent laryngectomies due to squamous cell carcinoma of the larynx at the otolaryngology department of khalili hospital, affiliated with shiraz university of medical sciences, shiraz, iran. in three patients, synchronous occurrence of ...

A bioassay of 1,5-naphthalenediamine for possible carcinogenicity was conducted using Fischer 344 rats and B6C3F1 mice. 1,5-Naphthalenediamine was administered in the feed, at either of two concentrations, to groups of 50 male and 50 female animals of each species. The high and low dietary concentrations utilized in the chronic bioassay were, respectively, 0.1 and 0.05 percent for rats and 0.2 ...

background & objectives: prognosis of thyroid papillary cancer is quite well long lasting, so a 10- year survival is observed in more than 90% cases. in this study, rate of incidence of thyroid papillary cancer in contralateral lobe was assessed among patients who had a surgical thyroidectomy re-operation. materials & methods: in this retrospective study, we examined 82 patients diagnos...

Pancreatic serous cystadenoma can be categorized into microcystic, honeycomb, oligocystic, and solid patterns based on imaging appearance. The presence of typical computed tomography (CT) features helps to differentiate serous cystadenomas from other cystic and solid pancreatic masses. Cases with atypical features present a diagnostic challenge as they can mimic malignant neoplasms. This articl...

Retroperitoneal mucinous cystadenomas are rare neoplasms, and given the scarcity of cases, its pathogenesis and management is still poorly understood. Although classically the excision was done with open surgery, there has been a gradual evolution towards the laparoscopic approach due to the development of this trans-peritoneal technique, as well as a retro-peritoneoscopic one. Lahey & Handfiel...

Ovarian carcinoid tumor is a rare neoplasm that may appear as a solid mass or often combined with teratomas or mucinous tumors. We report 2 cases associated with mucinous cystadenomas and describe their magnetic resonance imaging characteristics. On T(2)-weighted images, the tumors appeared as multilocular cystic masses with hypointense solid components as a result of abundant fibrous stroma in...