Cerebral astrocytomas and undifferentiated gliomas were graded by (1) Kernohan classification on the basis of visual microscopy, and (2) optical density/area profiles obtained by automated densitometry with a Quantimet 720 image-analysing computer. In a retrospective study of 44 patients the Quantimet measurements seemed to give a more accurate assessment of prognosis than visual grading.

background: giant cell tumor is a benign but locally aggressive bone neoplasm which uncommonly involves the skull. giant cell tumor (gct) of the sphenoid bone is relatively rare. in this report, we describe a tumor of the greater wing of left sphenoid bone. case presentation: a 31-year-old female was presented with headache, proptosis and diplopia of her left eye. cranial magnetic resonance ima...

Giant cell carcinoma of the endometrium is a rare and an aggressive tumor that should be distinguished from other endometrial tumors with a prominent giant cell component, including trophoblastic tumors, certain primary sarcomas, and malignant mixed müllerian tumors. At present, cumulative data on this rare histological variant is limited and the prognostic significance of the presence and the ...

BACKGROUND AND AIM: Giant cell lesions as a group of the oral and maxillofacial lesions are common and potentially destructive. The aim of this study was to assess the frequency of oral lesions containing giant cells in a 22-year period in Isfahan Dental School, Iran.METHODS: In this epidemiological, cross-sectional, retrospective study the archive information in the Department of Oral Patholog...

The epitope H contains an O-linked N-acetylglucosamine residue in a specific conformation and/or environment recognized by the monoclonal antibody H. It has previously been shown that the epitope H is present in several types of normal and pathological cells and in several polypeptides. In normal human brains the epitope H is present mostly to a minority of fibrous astrocytes, whereas it is gre...

OBJECTIVE AND IMPORTANCE We report a rare case of the tanycytic variant of intramedullary ependymoma. Tanycytes are the common progenitor cells of both ependymal cells and astrocytes. These particular elongate unipolar and bipolar ependymal cells extend from the ventricular lumen to the surface of the nervous system. It is extremely important, in terms of both management and prognosis, to disti...