Granular cell ameloblastoma is classified as a histological subtype of solid/multicystic ameloblastoma. Usual granular cell ameloblastoma is histologically characterized by granular changes of stellate-like cells located in the inner portion of the epithelial follicles. Here we report a case of another type of granular cell ameloblastoma, showing predominant anastomosing double-stranded trabecu...

1. Abrikossoff AJ. Ausgehend von der quergestreiften wilkuerlichen Muskulatur. Virchows Arch A 1926;260:215-33. 2. Markesbery WR, Duffy PE, Cowen D. granular cell tumors of the central nervous system. J Neuropathol Exp Neurol 1973;32:92-109. 3. Stromblad LG, Brun A, Cameron R. spinal granular cell tumor with subarachnoid hemorrhage: Case report. J Neurosurg 1987;21:230-3. 4. Buhl R, Hugo HH, He...

The effects of semi-chronic stress on neuronal morphology and choline acetyltransferase were studied by injecting rats with dexamethasone. It was found that in the dexamethasone-treated rats the choline acetyltransferase activity had increased in the area where the fibers from the perforant pathway synapse with the granular cell layer of the dentate gyrus and also where the mossy fibers of the ...

Malignant granular cell tumor is a rare neural tumor characterized by abundant granular-appearing tumor cells. These tumors account for <2% of all granular cell tumors. Unlike its benign counterpart, a malignant granular cell tumor presents primarily in the lower limb and is notably larger. Both the uncommon occurrence of malignant granular cell tumors and its similarities in feature with their...

Granular cell ameloblastoma (GCA) is a well recognized variant of follicular ameloblastoma with extensive granular cell change. In contrast, plexiform granular cell odontogenic tumor (PGCOT) is a rare and recently described lesion characterized histologically by a monophasic plexiform pattern of granular cells. In this paper, two cases of an unusual granular cell odontogenic tumor exhibiting co...

BACKGROUND Large granular lymphocyte leukemia is a rare lymphoproliferative disorder associated with autoimmune diseases and impaired hematopoiesis. This study describes the clinical and biological characteristics of 229 patients with T-cell or NK-cell large granular lymphocyte leukemia. DESIGN AND METHODS The diagnosis was based on a large granular lymphocyte expansion (> 0.5x10(9)/L) lastin...

Primary tumors of the brachial plexus region are rare and granular cell tumors arising from the brachial plexus region is an extremely rare disease. We present a case of granular cell tumor arising from of the brachial plexus which appeared to be a usual presentation of nerve sheath tumor before the pathological confirmation. We report a granular cell tumor of the brachial plexus with literatur...

A case of endobronchial granular cell tumor and an adenocarcinoma in the same lobe of the lung are presented. A review of the literature documents 2 cases where there was coexistence of a bronchogenic carcinoma and a granular cell tumor. The different theories regarding the origin of granular cell tumors are considered. The treatment of choice would be that indicated for the carcinoma irrespect...

Sir, Granular cell tumours first described by Abrikossoff (1), are uncommon and usually present as small non-tender solitary nodules. We report here for the first time a case of a granular cell tumour with marked osseous metaplasia on the back of a 68-year-old man. The lesion showed typical features of a granular cell tumour, with the unusual feature of prominent bone formation under microscopi...

The esophagus is the most common site of origin of gastrointestinal tract granular cell tumors. Approximately 270 cases of esophageal granular cell tumors have been reported in the literature. Most esophageal granular cell tumors are found incidentally during endoscopy. Although granular cell tumor of the esophagus has become easily recognizable by its endoscopic features, it has to be differen...