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The Korean Journal of Pathology 1988;22(3): 360-366.
Delayed Radionecrosis of the Brain: A case simulating recurrent glioma.
Shin Kwang Khang, Jun Ho Song, Kyu Ho Lee, In Wook Choo, Je G Chi
1Department of Pathology, Hallym University, Korea.
2Department of Neurosurgery, Hallym University, Korea.
3Department of Radiology, Hallym University, Korea.
4Department of Pathology, College of Medicine, Seoul National University, Seoul, Korea.
An appreciation of the radiation changes in the brain adjacent to radiated glioma is of considerable importance from both clinical and pathological standpoint because the alteration in the brain parenchyma may result in a picture that mimics recurrence of the neoplasm. A 35 years old woman was admitted because of deterioration of consciousness which has started about 20 days ago. Past history revealed removal of left frontal brain tumor 4 years earlier and the diagnosis was grade II astroma. Postoperative radiation was done at that time. Sine then, she has been doing well. Computerized tomogram showed an ill defined huge low density mass at right frontal and left posterior parietal areas, which was irregularly enhanced in postcontrast study. Unlikely to the usual brain tumors, there was no mass effect on adjacent structures. Histologically acellular necrotic zone was alternating with hypercellular zone and most striking changes were vascular and glial reaction. Most of the vessels showed acellular hyliane thickening of their wall and some vessels were almost completely occluded. There was marked glial proliferation with considerable cellular and nuclear irregularities. Gemistocytic astrocytes were frequently seen and some were multinucleated.
Key Words: Radiation necrosis; Brain; Astrocytoma
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