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Ring enhancement in recurrent gliomas

Journal Article:

Abstract

The clinical courses,CT scans, and postmortem reports for 6 glioma patients treated by surgery, radiation, and chemotherapy were reviewed. They underwent reoperation and/or retreatment with radiation or chemotherapy for recurrent tumors. CT scans taken at the time of recurrence or about one month prior to death showed ring enhancement of varied size and form after intensive treatment. The cases were examined histologically in correlation with the CT features and divided into two groups based on the pathological findings in the centers surrounded by areas of ring enhancement. The 1st group demonstrated a large necrotic area in the center, and the 2nd group, a cystic tumor. Tumor cells were found to have spread throughout the high-density areas around the necrotic area or cyst. However, gross differentiation between tumor and necrosis was difficult. In addition to an increase in cellularity, all cases demonstrated vascular proliferation, and dilatation of vessels in the sulci or sulci adjacent to gyri invaded by the tumor. The contrast enhancement corresponded well with the vascular proliferation in these areas. It is concluded that vascular proliferation or dilatation of vessels in and around the tumor is an important factor in demonstrating high-density areas in ring enhancement, while a cyst  More>>
Authors:
Ogashiwa, M; Takeuchi, K; Akai, K [1] 
  1. Kyorin Univ., Mitaka, Tokyo (Japan). School of Medicine
Publication Date:
Aug 01, 1981
Product Type:
Journal Article
Reference Number:
AIX-14-758432; EDB-83-134628
Resource Relation:
Journal Name: CT Kenkyu; (Japan); Journal Volume: 3:4
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; BRAIN; CAT SCANNING; GLIOMAS; DIAGNOSIS; CHEMOTHERAPY; CONTRAST MEDIA; IMAGES; NERVOUS SYSTEM DISEASES; PATIENTS; RADIOTHERAPY; SURGERY; BODY; CENTRAL NERVOUS SYSTEM; COMPUTERIZED TOMOGRAPHY; DIAGNOSTIC TECHNIQUES; DISEASES; MEDICINE; NEOPLASMS; NERVOUS SYSTEM; NUCLEAR MEDICINE; ORGANS; RADIOLOGY; THERAPY; TOMOGRAPHY; 550602* - Medicine- External Radiation in Diagnostics- (1980-)
OSTI ID:
6040509
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: CTKED
Submitting Site:
HEDB
Size:
Pages: 419-426
Announcement Date:

Journal Article:

Citation Formats

Ogashiwa, M, Takeuchi, K, and Akai, K. Ring enhancement in recurrent gliomas. Japan: N. p., 1981. Web.
Ogashiwa, M, Takeuchi, K, & Akai, K. Ring enhancement in recurrent gliomas. Japan.
Ogashiwa, M, Takeuchi, K, and Akai, K. 1981. "Ring enhancement in recurrent gliomas." Japan.
@misc{etde_6040509,
title = {Ring enhancement in recurrent gliomas}
author = {Ogashiwa, M, Takeuchi, K, and Akai, K}
abstractNote = {The clinical courses,CT scans, and postmortem reports for 6 glioma patients treated by surgery, radiation, and chemotherapy were reviewed. They underwent reoperation and/or retreatment with radiation or chemotherapy for recurrent tumors. CT scans taken at the time of recurrence or about one month prior to death showed ring enhancement of varied size and form after intensive treatment. The cases were examined histologically in correlation with the CT features and divided into two groups based on the pathological findings in the centers surrounded by areas of ring enhancement. The 1st group demonstrated a large necrotic area in the center, and the 2nd group, a cystic tumor. Tumor cells were found to have spread throughout the high-density areas around the necrotic area or cyst. However, gross differentiation between tumor and necrosis was difficult. In addition to an increase in cellularity, all cases demonstrated vascular proliferation, and dilatation of vessels in the sulci or sulci adjacent to gyri invaded by the tumor. The contrast enhancement corresponded well with the vascular proliferation in these areas. It is concluded that vascular proliferation or dilatation of vessels in and around the tumor is an important factor in demonstrating high-density areas in ring enhancement, while a cyst or necrosis in the tumor center is revealed as a low-density area in the CT scan of recurrent gliomas.}
journal = {CT Kenkyu; (Japan)}
volume = {3:4}
journal type = {AC}
place = {Japan}
year = {1981}
month = {Aug}
}