{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,8]],"date-time":"2026-01-08T16:25:20Z","timestamp":1767889520310,"version":"3.49.0"},"reference-count":13,"publisher":"BMJ","issue":"3","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2023,2,21]]},"published-print":{"date-parts":[[2023,3]]},"abstract":"<jats:p>Cystic mesothelioma, also known as benign multicystic peritoneal mesothelioma (BMPM), is a rare neoplasm and one of the five main histological types of peritoneal mesothelioma. Although it is usually considered benign histologically, it is increasingly accepted as a \u2018borderline malignancy\u2019 because the local recurrence rate is high. It is more common in middle-aged women and is generally asymptomatic. Considering that BMPM is often found in the pelvis, it is difficult to differentiate from other pelvic and abdominal lesions, such as cystic ovarian masses, especially mucinous cystadenoma\u2013adenocarcinoma, pseudomyxoma peritonei, etc. Preoperative diagnosis is very difficult due to its rarity and lack of specific diagnostic imaging and clinical findings. Definitive diagnosis is made only by pathological evaluation. In this article, we aimed to present the imaging findings of a BMPM case in a woman who was diagnosed with mucinous ovarian neoplasm with pseudomyxoma peritonei preoperatively and underwent cytoreductive surgery with hyperthermic intraperitoneal chemotherapy.<\/jats:p>","DOI":"10.1136\/bcr-2022-254116","type":"journal-article","created":{"date-parts":[[2023,3,7]],"date-time":"2023-03-07T08:45:46Z","timestamp":1678178746000},"page":"e254116","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":6,"title":["Benign multicystic peritoneal mesothelioma mimicking mucinous ovarian neoplasm with pseudomyxoma peritonei"],"prefix":"10.1136","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4459-4114","authenticated-orcid":false,"given":"Ceylan","family":"Altintas Taslicay","sequence":"first","affiliation":[{"name":"Radiology, Kocaeli University School of Medicine, Kocaeli, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maila","family":"Asadullayeva","sequence":"additional","affiliation":[{"name":"Radiology, Kocaeli University School of Medicine, Kocaeli, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aziz Hakki","family":"Civriz","sequence":"additional","affiliation":[{"name":"Pathology, Kocaeli University School of Medicine, Kocaeli, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gokhan","family":"Posteki","sequence":"additional","affiliation":[{"name":"General Surgery, Kocaeli University School of Medicine, Kocaeli, Turkey"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2023,3,7]]},"reference":[{"key":"2025082704013618000_16.3.e254116.1","doi-asserted-by":"crossref","DOI":"10.1186\/s13244-021-01118-y","article-title":"Communicating imaging findings in peritoneal mesothelioma: the impact of \u201c pause \u201d on surgical decision-making","volume":"12","author":"Chandramohan","year":"2021","journal-title":"Insights Imaging"},{"key":"2025082704013618000_16.3.e254116.2","doi-asserted-by":"crossref","DOI":"10.5339\/qmj.2022.5","article-title":"Benign multicystic peritoneal mesothelioma presents as a tumor in an elderly man: an uncommon diagnosis","volume":"2022","author":"Askar","year":"2022","journal-title":"Qatar Med J"},{"key":"2025082704013618000_16.3.e254116.3","doi-asserted-by":"crossref","DOI":"10.1515\/pp-2019-0024","article-title":"Multicystic peritoneal mesothelioma: a systematic review of the literature","volume":"4","author":"Noiret","year":"2019","journal-title":"Pleura Peritoneum"},{"key":"2025082704013618000_16.3.e254116.4","doi-asserted-by":"crossref","first-page":"137","DOI":"10.4103\/GMIT.GMIT_43_21","article-title":"Benign multicystic peritoneal mesothelioma complicating fertility preservation","volume":"11","author":"Shikanai","year":"2022","journal-title":"Gynecol Minim Invasive Ther"},{"key":"2025082704013618000_16.3.e254116.5","first-page":"323","article-title":"Benign multicystic peritoneal mesothelioma mimicking gynecologic pathology","volume":"60","author":"Alvir","year":"2021","journal-title":"Acta Clin Croat"},{"key":"2025082704013618000_16.3.e254116.6","doi-asserted-by":"crossref","unstructured":"Lee SJ , Nahm JH , Kang J , et al . Benign multicystic mesothelioma of appendiceal origin treated by hyperthermic intraperitoneal chemotherapy: a case report. 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