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Differential Diagnosis of Nonneoplastic Nonepithelial Polyps of the Colon Minako Fujiwara 1 , Daisuke Yoshimura 2 , Taisuke Sasaki 2 , Naohiko Harada 2 , Tatsuhiro Oishi 3 , Yayoi Oishi 3 1Department of Pathology, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan 2Department of Gastroenterology, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan 3Department of Medicine and Gastroenterology, Oishi Clinic, Fukuoka, Japan Keyword: 大腸非上皮性非腫瘍性ポリープ , 良性リンパ濾胞性ポリープ , ALアミロイドーシス , 腸管子宮内膜症 , 腸管囊胞状気腫症 pp.211-218
Published Date 2024/2/25
DOI https://doi.org/10.11477/mf.1403203472
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 Nonneoplastic nonepithelial polyps of the colon are benign, elevated lesions without colonic epithelial proliferation, and they are caused by reactive or ectopic cells. Many of these polyps present as submucosal tumor-like masses ; moreover, it is often difficult to distinguish these benign polyps from neoplastic ones. Lymphoid polyps must be differentiated from malignant lymphomas. Amyloid tumors(amyloidomas), in patients with amyloid light chain amyloidosis and mucosal intestinal endometriosis, which present as reddish flat polyps that are sometimes difficult to distinguish from neoplastic lesions by gross examination, can be easily diagnosed by the biopsy of the amyloid or endometrial tissue. Furthermore, pneumatosis cystoides intestinalis can be diagnosed by abdominal computed tomography but biopsy can also facilitate the diagnosis by detecting air-containing cysts, air-responsive multinucleated giant cells, and histiocytic aggregates.


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

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