Villous Tumor of the Colon Morio Koike 1 1Department of Pathology, Tokyo Metropolitan Komagome Hospital pp.1279-1283
Published Date 1986/12/25
DOI https://doi.org/10.11477/mf.1403110053
  • Abstract
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 Villous and papillary patterns, both macroscopically and microscopically, are most characteristic findings of villous tumor. Although precise morphogenesis of villous tumor is unknown, the mitotic activity ubiquitously seen in the neoplastic papilla, from the base to the tip, indicates the widely distributed growth zones in the tumor. The epithelia show vertical growth at the margin of the tumor partly replacing the original crypts. The degree of epithelial atypia varies from case to case, and from place to place even in a single tumor. At least, ones which are composed of epithelia with the most severe atypia should be regarded as carcinoma. To evaluate the malignancy of vinous tumor, comparative study with tubular adenoma as well as differentiated adenocarcinoma, should be performed with respect to cell kinetics, histomerrical analysis and so on.

Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.


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