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Histological Diagnosis of Rare Diseases of the Colon and Rectum Using Biopsy Specimens:the Pathologist's Point of View Takashi Yao 1 , Yuki Fukumura 1 , Takashi Murakami 2 , Harumi Saeki 3 , Jun Nakahodo 1 , Satsuki Kishikawa 1 1Department of Human Pathology, Juntendo University Graduate School of Medicine, Tokyo 2Department of Gastroenterology, Juntendo University School of Medicine, Tokyo 3Department of Pathology and Oncology, Juntendo University School of Medicine, Tokyo Keyword: 深在性囊胞型粘膜脱症候群 , 神経周膜腫 , 腸管囊胞状気腫症 , 孤立型アミロイドーシス , 弾性線維性ポリープ pp.790-798
Published Date 2017/5/25
DOI https://doi.org/10.11477/mf.1403201080
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 Many rare benign diseases occur in the large intestine. Although tissue sampling may aid diagnosis, to effectively utilize biopsy procedures, it is necessary to know the diseases that may be definitively diagnosed by biopsy. This requires familiarity with the histological features of mucosal tissue in each disease.

 Of the inflammatory diseases, collagenous colitis and lymphocytic colitis require biopsy for definitive diagnosis. Several other conditions can exhibit histological signs of disease, but diagnosis by biopsy is ineffective without the understanding of their characteristics. Biopsies are useful in distinguishing many epithelial tumor-like lesions(non-neoplastic polyps)from neoplastic lesions. Because mucosal tissue often exhibits similar histological features in different disease processes, it is difficult to make a definitive diagnosis based on mucosal biopsy alone. Non-epithelial tumors may be diagnosed once a part of the lesion is biopsied; however, misdiagnosis is a possibility if appropriate immunostaining is not performed.

 In this article, we will focus on the rare colorectal diseases yielding useful diagnostic biopsies, and will present the histological features of some less familiar lesions. I would like to think that by familiarizing you with these unusual conditions, they may be more easily recognized in the future.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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