New Classification of Cystic Lesions of the Pancreas Koh Furuta 1 , Hidenobu Watanabe 1 , Seiyo Ikeda 2 , Mitsuya Iwafuchi 1 , Noriko Ishihara 1 1The First Department of Pathology, Niigata University, School of Medicine, Niigata 2The First Department of Surgery, Fukuoka University, School of Medicine pp.139-149
Published Date 1990/2/25
DOI https://doi.org/10.11477/mf.1403110379
  • Abstract
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 Recent progress in various imaging techniques has led us to increased recognition of cystic lesions of the pancreas. Prior classifications of these lesions, however, have not been neccesarily appropiate in defining them. In this study,147 cystic lesions found in 43 patients were divided into eight groups, based on the histological nature of the lining epithelium, i.e., the proper epithelium type (28 lesions), mixed proper and metaplastic mucous epithelium type (19 lesions), mixed proper and metaplastic squamous epithelium type (1 lesion), metaplastic mucous epithelium type (27 lesions), metaplastic squamous epithelium type (2 lesions), combined metaplastic mucous and squamous epithelium type (2 lesions), adenoma type (3 lesions), and carcinoma type (65 lesions).

 Moreover, the macroscopic appearance, unilocular or multilocular, was added to the classification. With this new classification, more detailed division of benign cysts formerly called retention cysts was possible and seemed more practical. In addition, this study demonstrated that neoplastic cysts tended to be larger and multiloculated. Also, the lining epithelium of the neoplastic cysts were taller than that of the non-neoplastic cysts.

Copyright © 1990, Igaku-Shoin Ltd. All rights reserved.


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