{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,23]],"date-time":"2026-03-23T18:30:35Z","timestamp":1774290635505,"version":"3.50.1"},"reference-count":10,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2026,3,23]],"date-time":"2026-03-23T00:00:00Z","timestamp":1774224000000},"content-version":"vor","delay-in-days":22,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,3,23]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Sclerosing stromal tumor (SST) is an uncommon benign ovarian stromal neoplasm, while serous cystadenoma is one of the most frequent benign epithelial ovarian tumors. Ovarian fibroma is another benign stromal tumor that may radiologically mimic malignancy. The coexistence of these three tumors within a single ovary is exceedingly rare. We report the case of a 45-year-old woman who presented with lower abdominal pain and urinary symptoms, in whom a large left adnexal mass was detected by pelvic ultrasonography and further evaluated by contrast-enhanced computed tomography. Imaging revealed a large complex solid\u2013cystic mass with irregular margins, raising suspicion for ovarian malignancy. Surgical excision was performed, and histopathological examination confirmed the concurrent presence of sclerosing stromal tumor, serous cystadenoma, and fibroma within the same ovary, consistent with a collision tumor. This case emphasizes the importance of careful histopathological evaluation to avoid misdiagnosis and unnecessary aggressive treatment.<\/jats:p>","DOI":"10.1093\/omcr\/omag026","type":"journal-article","created":{"date-parts":[[2026,3,23]],"date-time":"2026-03-23T17:43:23Z","timestamp":1774287803000},"source":"Crossref","is-referenced-by-count":0,"title":["First reported case of triple benign ovarian collision tumor of the left ovary mimicking malignancy on ultrasound and CT imaging: sclerosing stromal tumor, serous cystadenoma, and fibroma"],"prefix":"10.1093","volume":"2026","author":[{"given":"Eman","family":"Alwaraa","sequence":"first","affiliation":[{"name":"Department of Gynecology, Tishreen University Hospital , Lattakia ,","place":["Syria"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hazar","family":"Salloum","sequence":"additional","affiliation":[{"name":"Department of Gynecology, Tishreen University Hospital , Lattakia ,","place":["Syria"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mohsen","family":"Ahmad","sequence":"additional","affiliation":[{"name":"Department of Gynecology, National Hospital in Qardaha , Lattakia ,","place":["Syria"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ali","family":"Daoud","sequence":"additional","affiliation":[{"name":"Department of Pathology, Tishreen University Hospital , Lattakia ,","place":["Syria"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1675-4125","authenticated-orcid":false,"given":"Moatasem Ali Hussein","family":"Al-janabi","sequence":"additional","affiliation":[{"name":"Department of Pathology, Cancer Research Center, Tishreen University Hospital , Lattakia ,","place":["Syria"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2026,3,23]]},"reference":[{"key":"2026032313431582800_ref1","doi-asserted-by":"publisher","first-page":"929","DOI":"10.1097\/00004728-199911000-00017","article-title":"Collision tumors of the ovary associated with teratoma: clues to the correct preoperative diagnosis","volume":"23","author":"Kim","year":"1999","journal-title":"J Comput Assist Tomogr"},{"key":"2026032313431582800_ref2","doi-asserted-by":"publisher","first-page":"767","DOI":"10.1007\/s00404-008-0781-6","article-title":"Collision tumor: serous cystadenocarcinoma and dermoid cyst in the same ovary","volume":"279","author":"Bige","year":"2009","journal-title":"Arch Gynecol Obstet"},{"key":"2026032313431582800_ref3","doi-asserted-by":"publisher","first-page":"2156","DOI":"10.1007\/s00261-017-1419-6","article-title":"Ovarian collision tumors: imaging findings, pathological characteristics, diagnosis, and differential diagnosis","volume":"43","author":"Peng","year":"2018","journal-title":"Abdom Radiol (NY)"},{"key":"2026032313431582800_ref4","doi-asserted-by":"crossref","first-page":"664","DOI":"10.1002\/1097-0142(197303)31:3<664::AID-CNCR2820310327>3.0.CO;2-F","article-title":"Sclerosing stromal tumors of the ovary","volume":"31","author":"Chalvardjian","year":"1973","journal-title":"Cancer"},{"key":"2026032313431582800_ref5","first-page":"84","article-title":"Benign ovarian tumors: a clinical and epidemiological study","volume":"120","author":"Medeiros","year":"2005","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"key":"2026032313431582800_ref6","doi-asserted-by":"publisher","first-page":"188","DOI":"10.3802\/jgo.2011.22.3.188","article-title":"Clinical characteristics of ovarian fibroma: a single center experience","volume":"22","author":"Koo","year":"2011","journal-title":"J Gynecol Oncol"},{"key":"2026032313431582800_ref7","first-page":"93","article-title":"The role of imaging in the diagnosis of ovarian cancer","volume":"55","author":"Moore","year":"2012","journal-title":"Clin Obstet Gynecol"},{"key":"2026032313431582800_ref8","first-page":"1234","article-title":"Collision tumors: pathological and clinical perspectives","volume":"12","author":"Wang","year":"2019","journal-title":"Int J Clin Exp Pathol"},{"key":"2026032313431582800_ref9","year":"2020"},{"key":"2026032313431582800_ref10","volume-title":"WHO Classification of Tumours of Female Reproductive Organs","author":"Seidman","year":"2014"}],"container-title":["Oxford Medical Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/omcr\/article-pdf\/2026\/3\/omag026\/67483524\/omag026.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/omcr\/article-pdf\/2026\/3\/omag026\/67483524\/omag026.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,23]],"date-time":"2026-03-23T17:43:25Z","timestamp":1774287805000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/omcr\/article\/doi\/10.1093\/omcr\/omag026\/8537667"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,3]]},"references-count":10,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2026,3,23]]}},"URL":"https:\/\/doi.org\/10.1093\/omcr\/omag026","relation":{},"ISSN":["2053-8855"],"issn-type":[{"value":"2053-8855","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2026,3]]},"published":{"date-parts":[[2026,3]]},"article-number":"omag026"}}