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Gastric Benign/Malignant Borderline Lesion Diagnosed as Group Ⅲ by Biopsy Specimen: Diagnostic Problems from the Viewpoint of Long-term Clinical Course Tadahiko Fuchigami 1 , Akinori Iwashita 2 1Department of Gastroenterology, Matsuyama Red Cross Hospital 2Department of Pathology, Fukuoka University Chikushi Hospital Keyword: GroupⅢ , GroupⅢの経過観察 , 生検診断 pp.153-168
Published Date 1994/2/25
DOI https://doi.org/10.11477/mf.1403105683
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 We analyzed the changes in size and grade of atypia of 44 elevated gastric lesions in 41 patients, which were diagnosed as Group Ⅲ by the biopsy specimen and were followed for more than three years by x-ray examination. Twenty-four lesions (54.5%) increased in size, 17 ones unchanged, and three ones disappeared. The final diagnoses of the 24 lesions that increased in size were nine carcinomas, three borderline lesions and 12 adenomas. The average doubling times estimated by surface area of these three groups were 32.5 months, 67.8 months, and 131.5 months respectively. The doubling times of carcinoma and adenoma were statistically different. The borderline lesion that was finally diagnosed as carcinoma, compared with the type Ⅱa early cancer, showed a tendency to grow horizontally and slowly. We reviewed the initial biopsy specimen of the lesions: histological features were mainly intestinal type, tubular pattern and to be categorized in Group Ⅲ, however gastric type or villous pattern were intermingled in many cases. We concluded that adenomas with such histological findings should be treated as carcinoma or high risk group of malignant transformation. Twelve lesions in 29 adenomas (41%) increased in size, but their growth was slow.


Copyright © 1994, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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