Collision Early Gastric Cancers, Report of a Case Kunio Takagi 1 , Keizi Iwakiri 1 , Katuo Shimozyu 2 1Hayashi Surgical Hospital 2Edogawa Hospital Keyword: 衝突癌 , 早期胃癌 pp.1141-1146
Published Date 1997/7/25
DOI https://doi.org/10.11477/mf.1403104986
  • Abstract
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 A 65-year-old female was found by endoscopy to have a Ⅱc type cancer on the gastric angle. Further examination using a side‐viewing endoscope revealed that the Ⅱc was 3 cm in size and located on the lesser curvature of the angle a white Ⅱa type cancer was discovered adjacent to the oral side of the Ⅱc, and biopsy findings of these two lesions were different. Furthermore, red erosion was detected on the lesser curvature of the middle body, and biopsy specimen showed it to be cancer.

 The preoperative diagnosis suspected the collision of early cancers and Ⅱc. Surgical specimens showed a Ⅱc type cancer 5×2 cm in size located on the angle. Histologically, a poorly differentiated adenocarcinoma 10×5 cm in size with invasion depth m, along with Ul-Ⅱs and Ⅱa+Ⅱc, had spread widely and superficially to the oral side and was adjoining the Ⅱc. Histologically, the Ⅱa+Ⅱc was a well differentiated adenocarcinoma with invasion depth m, along with Ul-Ⅱs. This histologic figure is similar to differentiated adenocarcinoma with low-grade atypia. Thus the collision of two cancers was diagnosed histologically. There was no lymph node metastasis.

 When trying to diagnose early cancers, the finding of Ⅱa and Ⅱc type lesions adjoining each other, but with clearly different biopsy findings, should be considered as possibly being the collision of early gastric cancers.

Copyright © 1997, Igaku-Shoin Ltd. All rights reserved.


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