{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T15:51:15Z","timestamp":1782489075129,"version":"3.54.5"},"reference-count":13,"publisher":"BMJ","issue":"4","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2026,3,14]]},"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:p>Malignant Brenner tumours (MBT) are extremely rare surface epithelial tumours of the ovary. We present a case of ovarian MBT, causing ureteric obstruction. A middle-aged female in her 40s, postabdominal hysterectomy, with a left percutaneous nephrostomy tube in situ, presented to the gynaecology department with lower abdominal pain for 6\u2009months, radiating from the left flank to the groin. On evaluation, she was found to have a neoplastic left adnexal mass involving the distal left ureter. She underwent complete surgical staging with left distal ureter resection and ureteric reimplantation with a psoas hitch. Histopathological findings were suggestive of MBT stage IIIA1(i). She received six cycles of platinum-based adjuvant chemotherapy. Currently, she is in remission at a 1-year follow-up.<\/jats:p>","DOI":"10.1136\/bcr-2026-271992","type":"journal-article","created":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T16:05:28Z","timestamp":1775145928000},"page":"e271992","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Malignant Brenner tumour of ovary causing ureteric obstruction"],"prefix":"10.1136","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3156-7486","authenticated-orcid":false,"given":"Kavita","family":"Khoiwal","sequence":"first","affiliation":[{"name":"Obstetrics and Gynecology, All India Institute of Medical Sciences Rishikesh, Rishikesh, Uttarakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Akanksha","family":"Deshwali","sequence":"additional","affiliation":[{"name":"Obstetrics and Gynecology, All India Institute of Medical Sciences Rishikesh, Rishikesh, Uttarakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bharat","family":"Bhartendu","sequence":"additional","affiliation":[{"name":"Pathology, All India Institute of Medical Sciences Rishikesh, Rishikesh, Uttarakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vikas Kumar","family":"Panwar","sequence":"additional","affiliation":[{"name":"Department of Urology, All India Institute of Medical Sciences Rishikesh, Rishikesh, Uttarakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jaya","family":"Chaturvedi","sequence":"additional","affiliation":[{"name":"Obstetrics and Gynecology, All India Institute of Medical Sciences Rishikesh, Rishikesh, Uttarakhand, India"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2026,4,2]]},"reference":[{"key":"2026062608151938000_19.4.e271992.1","first-page":"40","article-title":"Brenner tumour of ovary: An incidental finding","volume":"2","author":"Borah","year":"2011","journal-title":"J Midlife Health"},{"key":"2026062608151938000_19.4.e271992.2","unstructured":"Lax SF , Folkins AK , Palacios J , et al . Brenner tumor. In: Female Genital Tumours. 5th edn. Lyon: International Agency for Research on Cancer, 2020."},{"key":"2026062608151938000_19.4.e271992.3","doi-asserted-by":"crossref","DOI":"10.3390\/cancers16061106","article-title":"Malignant Brenner Tumor of the Ovary: A Systematic Review of the Literature","volume":"16","author":"Koufopoulos","year":"2024","journal-title":"Cancers (Basel)"},{"key":"2026062608151938000_19.4.e271992.4","first-page":"150","article-title":"Das oophoroma folliculare","volume":"1","author":"Brenner","year":"1907","journal-title":"Frankf Z Pathol"},{"key":"2026062608151938000_19.4.e271992.5","doi-asserted-by":"crossref","first-page":"114","DOI":"10.3109\/00016344509153656","article-title":"A Contribution to the Case Knowledge and Histology of the Brenner Tumor.: Do malignant Forms of the Brenner Tumor also occur?","volume":"25","author":"von Numers","year":"1945","journal-title":"Acta Obstet Gynecol Scand"},{"key":"2026062608151938000_19.4.e271992.6","doi-asserted-by":"crossref","first-page":"976","DOI":"10.1002\/ijgo.15884","article-title":"FIGO position statement on opportunistic salpingectomy as an ovarian cancer prevention strategy","volume":"167","author":"Mor-Hadar","year":"2024","journal-title":"Int J Gynaecol Obstet"},{"key":"2026062608151938000_19.4.e271992.7","doi-asserted-by":"crossref","first-page":"26","DOI":"10.1016\/j.gore.2017.07.001","article-title":"Malignant Brenner tumor of the ovary: Review and case report","volume":"22","author":"Lang","year":"2017","journal-title":"Gynecol Oncol Rep"},{"key":"2026062608151938000_19.4.e271992.8","first-page":"71","article-title":"Malignant Brenner tumor of the ovary: one single institute experience and a review of the literature","volume":"3","author":"Bouhani","year":"2020","journal-title":"Anatol JFM"},{"key":"2026062608151938000_19.4.e271992.9","doi-asserted-by":"crossref","first-page":"135","DOI":"10.20473\/mog.V26I32018.135-142","article-title":"Ovarian Malignant Brenner Tumor","volume":"26","author":"Alfianto","year":"2019","journal-title":"MOG"},{"key":"2026062608151938000_19.4.e271992.10","doi-asserted-by":"publisher","DOI":"10.1007\/s10147-011-0290-7"},{"key":"2026062608151938000_19.4.e271992.11","first-page":"233","article-title":"Bilateral Brenner tumor with endometrial adenocarcinoma in a postmenopausal woman","volume":"28","author":"Indraccolo","year":"2007","journal-title":"Eur J Gynaecol Oncol"},{"key":"2026062608151938000_19.4.e271992.12","doi-asserted-by":"publisher","DOI":"10.1016\/j.ygyno.2016.04.538"},{"key":"2026062608151938000_19.4.e271992.13","doi-asserted-by":"crossref","DOI":"10.12659\/AJCR.938680","article-title":"A Rare Case of Ruptured Malignant Ovarian Brenner Tumor","volume":"24","author":"Kurniadi","year":"2023","journal-title":"Am J Case Rep"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2026-271992","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T15:21:15Z","timestamp":1782487275000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2026-271992"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,4]]},"references-count":13,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2026,4,2]]},"published-print":{"date-parts":[[2026,4]]}},"alternative-id":["10.1136\/bcr-2026-271992"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2026-271992","relation":{},"ISSN":["1757-790X"],"issn-type":[{"value":"1757-790X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,4]]}}}