MALIGNANT TRNSFORMATION OF GASTRIC POLYP.: REPORT OF TWO CASES OF KAGAWA

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Two cases of malignant change of gastric polyp which had been followed up by X-ray, endoscopy, and biopsy were reported.Case I The first roentgenologic and endoscopic examination revealed a pedunculated gastric polyp on the greater curvature of the antrum, which was diagnosed as benign polyp by biopsy. One year later, the second X-ray and endoscopy demonstrated the same finding as before. Seven years later, the pedunculated polyp changed to flat polyp in shape and was diagnosed as adenocarcinoma by biopsy. Gross specimen of the resected stomach showed a IIa + IIc type early gastric cancer. This fact suggested that marked changes seen between the endoscopic appearance and the resected stomach may had been induced by endoscopic biopsy. Histological diagnosis was papillary adenocarcinoma with invasion m. Case II X-ray and endoscopic examination showed a pedunculated gastric polyp on the greater curvature of the corpus of remnant stomach. Biopsy specimen taken at that time revealed benign polyp which was diagnosed as malignancy one year after the initial examination. Five years after, the resected stomach showed a pedunculated polyp, 22 ×11× 23mm in three dimensions.
社団法人日本消化器内視鏡学会の論文