{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,8]],"date-time":"2026-05-08T09:30:11Z","timestamp":1778232611295,"version":"3.51.4"},"reference-count":12,"publisher":"Scientific Scholar","content-domain":{"domain":["clinicalimagingscience.org"],"crossmark-restriction":true},"short-container-title":[],"abstract":"<jats:p>Pelvic pain presents a common diagnostic conundrum with a myriad of causes ranging from benign and trivial to malignant and emergent. We present a case where a mucinous neoplasm of the appendix acted as a mimic for tubular adnexal pathology on imaging. With the associated imaging findings on ultrasound, computed tomography, and magnetic resonance imaging, we wish to raise awareness of mucinous tumors of the appendix when tubular right adnexal pathology is present both in the presence of pelvic or abdominal pain or when noted incidentally. Tubular pathology such as uncomplicated paraovarian cysts or hydrosalpinx is frequently treated conservatively with long-interval follow-up imaging or left to clinical follow-up. Thus, if incorrectly diagnosed as tubular pathology, an appendix mucocele or mucinous neoplasm of the appendix is likely to be undertreated. We wish to clarify some of the confusion around nomenclature and classification of the multiple entities that are comprised by the terms mucocele and mucinous tumor of the appendix.<\/jats:p>","DOI":"10.4103\/jcis.jcis_27_18","type":"journal-article","created":{"date-parts":[[2018,8,24]],"date-time":"2018-08-24T08:17:47Z","timestamp":1535098667000},"page":"32","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Mucinous Neoplasm of the Appendix as a Mimic of Cystic Adnexal Pathology"],"prefix":"10.25259","volume":"8","author":[{"given":"Chris","family":"Hutchinson","sequence":"first","affiliation":[{"name":"Department of Imaging, University of Alberta Hospital, Edmonton, Alberta, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonathan","family":"Lyske","sequence":"additional","affiliation":[{"name":"Department of Imaging, University of Alberta Hospital, Edmonton, Alberta, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vimal","family":"Patel","sequence":"additional","affiliation":[{"name":"Department of Imaging, University of Alberta Hospital, Edmonton, Alberta, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gavin","family":"Low","sequence":"additional","affiliation":[{"name":"Department of Imaging, University of Alberta Hospital, Edmonton, Alberta, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2018,8,24]]},"reference":[{"key":"10.4103\/jcis.JCIS_27_18\/ref-1","doi-asserted-by":"crossref","first-page":"14","DOI":"10.1097\/PAS.0000000000000535","article-title":"A consensus for classification and pathologic reporting of pseudomyxoma peritonei and associated appendiceal neoplasia: The results of the peritoneal surface oncology group international (PSOGI) modified delphi process","volume":"40","author":"Carr","year":"2016","journal-title":"Am J Surg Pathol"},{"key":"10.4103\/jcis.JCIS_27_18\/ref-2","first-page":"233","article-title":"Pseudomyxoma peritonei syndrome","volume":"30","author":"Sugarbaker","year":"1996","journal-title":"Adv Surg"},{"key":"10.4103\/jcis.JCIS_27_18\/ref-3","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1007\/BF02236899","article-title":"Appendiceal tumors: Retrospective clinicopathologic analysis of appendiceal tumors from 7,970 appendectomies","volume":"41","author":"Connor","year":"1998","journal-title":"Dis Colon Rectum"},{"key":"10.4103\/jcis.JCIS_27_18\/ref-4","doi-asserted-by":"crossref","first-page":"1379","DOI":"10.1245\/s10434-012-2238-1","article-title":"Importance of histologic subtype in the staging of appendiceal tumors","volume":"19","author":"Turaga","year":"2012","journal-title":"Ann Surg Oncol"},{"key":"10.4103\/jcis.JCIS_27_18\/ref-5","doi-asserted-by":"crossref","first-page":"69","DOI":"10.2214\/ajr.159.1.1609724","article-title":"Mucocele of the appendix: Imaging findings","volume":"159","author":"Madwed","year":"1992","journal-title":"AJR Am J Roentgenol"},{"key":"10.4103\/jcis.JCIS_27_18\/ref-6","doi-asserted-by":"crossref","first-page":"1123","DOI":"10.2214\/ajr.178.5.1781123","article-title":"Non-Hodgkin's lymphoma of the appendix: Clinical and CT findings with pathologic correlation","volume":"178","author":"Pickhardt","year":"2002","journal-title":"AJR Am J Roentgenol"},{"key":"10.4103\/jcis.JCIS_27_18\/ref-7","article-title":"WHO Classification of Tumours of the Digestive System. 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A clinicopathologic analysis of 109 cases with emphasis on distinguishing pathologic features, site of origin, prognosis, and relationship to \u201cpseudomyxoma peritonei\u201d","volume":"19","author":"Ronnett","year":"1995","journal-title":"Am J Surg Pathol"},{"key":"10.4103\/jcis.JCIS_27_18\/ref-10","doi-asserted-by":"crossref","first-page":"1059","DOI":"10.1148\/rg.2017160150","article-title":"Neoplasms of the appendix: Pictorial review with clinical and pathologic correlation","volume":"37","author":"Leonards","year":"2017","journal-title":"Radiographics"},{"key":"10.4103\/jcis.JCIS_27_18\/ref-11","first-page":"591","article-title":"Pseudomyxoma peritonei. 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