نتایج جستجو برای: anaplastic astrocytoma

تعداد نتایج: 20945  

2017
Hirofumi Hirano Takashi Kawahara Masaki Niiro Hajime Yonezawa Tomoko Takajyou Yasuyo Ohi Ikumi Kitazono Kiyohiro Sakae Kazunori Arita

We herein present an autopsy case of a glioma patient who received long-term treatment with temozolomide (TMZ). The patient, a 35-year-old man with a hypointense tumor of the left frontal lobe, without contrast enhancement following gadolinium (Gd) administration on T1-weighted images, underwent tumor removal surgery, after which the tumor was diagnosed as anaplastic astrocytoma. By the third r...

Journal: :Toxicologic pathology 1987
D S Wyand G M Zwicker K Pavkov

The purpose of this report is to describe the occurrence and pathology of a spontaneous and rare brain tumor in a strain of rat commonly employed for drug and chemical safety testing. Glioblastoma multiforme is another term for “malignant astrocytoma” (Grade 3 or 4) and is characterized by cellular and nuclear hyperchromasia and pleomorphism, multinucleated giant cells and pallisading necrosis....

2016

Abstract Gliomas of the cerebellum are rare in adults, and their natural history and clinical behavior are not well known. Because cerebellar glioma is not usually diagnosed until clinical symptoms have appeared, no reports have described the developmental process of new cerebellar gliomas. We describe a case of de novo cerebellar anaplastic astrocytoma in which the developmental process was de...

Journal: :Indian journal of cancer 2009
M K Khan G K Hunter M Vogelbaum J H Suh S T Chao

The incidence of gliomas is increasing worldwide, including India. Of the 18,820 new cases of primary central nervous system (CNS) tumors diagnosed annually in the United States, gliomas account for over 60% with 30-40% of them being glioblastoma multiforme (GBM), 10% being anaplastic astrocytoma (AA), and 10% being low grade gliomas (LGGs). This is in contrast to one study from West Bengal, In...

Journal: :Cancer research 1980
D S Fulton V A Levin W P Lubich C B Wilson L J Marton

Eighteen cerebrospinal fluid polyamine determinations in 12 patients with glioblastoma multiforme and 76 determinations in 37 patients with anaplastic astrocytoma were evaluated. Cerebrospinal fluid polyamine levels showed no significant relationship to the degree of malignancy or to enhanced tumor volume or volume of tumor central low density as determined by contrast-enhanced computerized tom...

2012

Astrocytomas are tumors that are believed to arise from precursors of astrocytes – supportive cells of the brain named for their star-like shape. Astrocytomas are the most common of the primary brain tumors. The pathologist, using a microscope, grades these tumors on a scale of I to IV based on how quickly the cells are reproducing, as well as their potential to invade nearby tissue. Grade IV a...

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