title: Higher frequency of ras oncogene activation in gastric stump carcinomas due to special conditions in the gastric remnant.
abstract: Gastric stump carcinoma is now widely recognized to be due to special conditions in the gastric remnant. To examine whether the mechanism of carcinogenesis is different in gastric stump carcinoma from other gastric carcinoma, we analyzed ras mutation in 62 gastric carcinomas. The ras mutation frequency was 4/17 (23.5%) in stump carcinomas, 2/25 (8.0%) in other remnant carcinomas and 1/20 (5.0%) in proximal carcinomas. The mutation frequency in stump carcinomas was much higher than that in other gastric carcinomas. These results suggest that the mechanism of carcinogenesis in gastric stump carcinomas may be different from other gastric carcinomas.
authors: KANAZAWA UNIV,SCH MED,DEPT SURG 2,KANAZAWA,ISHIKAWA 920,JAPAN. NAGASAKI UNIV,SCH MED,DEPT ONCOL,NAGASAKI 852,JAPAN.
authors: S
authors: S
authors: Fushida
authors: Y
authors: Y
authors: Yonemura
authors: T
authors: T
authors: Urano
authors: K
authors: K
authors: Tsugawa
authors: I
authors: I
authors: Miyazaki
authors: H
authors: H
authors: Shiku