{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T02:44:56Z","timestamp":1792032296819,"version":"4.4.0"},"reference-count":11,"publisher":"Oxford University Press (OUP)","issue":"10","license":[{"start":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T00:00:00Z","timestamp":1792022400000},"content-version":"vor","delay-in-days":14,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Primary retroperitoneal mucinous cystic neoplasms (PRMCNs) are rare tumors classified into cystadenoma, PRMCN with borderline malignancy (PRMCN-BM), and cystadenocarcinoma. We report a 60-year-old woman with left flank abdominal pain whose MRI revealed situs inversus totalis alongside a complex cystic lesion in the left retroperitoneum measuring 4.8\u2009\u00d7\u20095.2\u2009\u00d7\u20094.5\u00a0cm. She underwent laparotomy with complete resection of the lesion, and histopathology confirmed a primary retroperitoneal neoplasm with borderline malignancy, with an uneventful postoperative course and no recurrence after 8\u00a0months. To date, only 35 cases of mucinous cystadenomas with borderline malignancy have been documented in the literature. Clinical presentation is variable, imaging lacks specific diagnostic criteria, and serum tumor markers have no diagnostic value. Surgical resection remains the curative therapeutic approach, and histopathology is essential for the definitive diagnosis, which continues to pose a preoperative challenge.<\/jats:p>","DOI":"10.1093\/jscr\/rjag918","type":"journal-article","created":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T11:54:40Z","timestamp":1790855680000},"source":"Crossref","is-referenced-by-count":0,"title":["Primary borderline retroperitoneal mucinous cystic neoplasm and situs inversus totalis: a case report"],"prefix":"10.1093","volume":"2026","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-5885-2216","authenticated-orcid":false,"given":"Jeude M S","family":"Bravo","sequence":"first","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Faculdade de Ci\u00eancias M\u00e9dicas e da Sa\u00fade de Juiz de Fora \u2013 SUPREMA , Alameda Salvaterra, 200, Salvaterra, Juiz de Fora, Minas Gerais, CEP 36033-003,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Igor V","family":"Cangussu","sequence":"additional","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Priscila T","family":"Tanuri","sequence":"additional","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giovanna A","family":"Rosa","sequence":"additional","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Vaine G S","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jo\u00e3o Lucas G","family":"Correa","sequence":"additional","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L\u00facio Fernando D","family":"Cachaca","sequence":"additional","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Faculdade de Ci\u00eancias M\u00e9dicas e da Sa\u00fade de Juiz de Fora \u2013 SUPREMA , Alameda Salvaterra, 200, Salvaterra, Juiz de Fora, Minas Gerais, CEP 36033-003,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Frederico Augustus M","family":"Resende","sequence":"additional","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eliel O","family":"De Ara\u00fajo","sequence":"additional","affiliation":[{"name":"Department of General Surgery , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]},{"name":"Hospital e Maternidade Therezinha de Jesus , , Rua Dr. Dirceu de Andrade, 33, S\u00e3o Mateus, Juiz de Fora, Minas Gerais, CEP 36025-330,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,10,14]]},"reference":[{"key":"2026101422000432300_ref1","doi-asserted-by":"publisher","first-page":"526","DOI":"10.1097\/PAS.0b013e3181909018","article-title":"Primary retroperitoneal mucinous tumors: a clinicopathologic study of 18 cases","volume":"33","author":"Roma","year":"2009","journal-title":"Am J Surg Pathol"},{"key":"2026101422000432300_ref2","doi-asserted-by":"publisher","DOI":"10.1177\/03000605231172469","article-title":"Primary retroperitoneal mucinous cystic neoplasm of borderline malignancy with KRAS and GNAS co-mutation: a case report","volume":"51","author":"Son","year":"2023","journal-title":"J Int Med 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