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Japanese

Three cases of primary appendiceal carcinoma that initially misdiagnosed as abscess-forming appendicitis on CT imaging Chisato Maeda 1 1Department of Radiology JR Hiroshima Hospital Keyword: 膿瘍形成性虫垂炎 , 原発性虫垂癌 , 虫垂粘液癌 , 低異型度虫垂粘液性腫瘍(LAMN) pp.339-344
Published Date 2025/3/10
DOI https://doi.org/10.18888/rp.0000002875
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Primary appendiceal carcinoma is often difficult to diagnose early and is frequently misdiagnosed as appendicitis preoperatively. We reported three cases initially misdiagnosed as abscess-forming appendicitis because abscess size reduction on short-interval follow-up CT, however which were final pathological diagnosis revealed primary appendiceal carcinoma. Three CT findings were important to identified to differentiate primary appendiceal carcinoma from abscess-forming appendicitis:① subtle contrast enhancement within the fluid collection, ② calcifications different from typical appendicoliths, and ③ presence of peritoneal dissemination and lymph node metastases.


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電子版ISSN 印刷版ISSN 0009-9252 金原出版

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