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Subsequent imaging with transvaginal ultrasonography (TVUS) and MRI revealed multifocal deep infiltrating endometriosis (DIE) involving the rectosigmoid junction, retrocervical region and rectovaginal septum. Based on these findings, the patient underwent a second surgical intervention, which included rectovaginal shaving. Intestinal endometriosis, a common manifestation of DIE, affects adjacent pelvic structures in up to 93% of cases. TVUS and MRI are essential tools for diagnosis and preoperative planning. While surgical treatment improves quality of life, access to timely, multidisciplinary care remains a major challenge in resource-limited settings.<\/jats:p>","DOI":"10.1136\/bcr-2025-267731","type":"journal-article","created":{"date-parts":[[2025,11,27]],"date-time":"2025-11-27T03:45:19Z","timestamp":1764215119000},"page":"e267731","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Appendiceal endometriosis: an uncommon manifestation of deep infiltrating endometriosis"],"prefix":"10.1136","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-2862-7007","authenticated-orcid":false,"given":"Esteban A","family":"V\u00e1squez Carpio","sequence":"first","affiliation":[{"name":"Clinical Imaging Research Fellowship, Universidad Andres Bello, Santiago, Regi\u00f3n Metropolitana, Chile"},{"name":"Department of Radiology, Clinica INDISA, Santiago, Metropolitan Region, Chile"},{"name":"School of Medicine, Universidad Andres Bello, Santiago, Metropolitan Region, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-7298-6290","authenticated-orcid":false,"given":"L\u00eda F","family":"Rodriguez Navas","sequence":"additional","affiliation":[{"name":"Department of Radiology, Clinica INDISA, Santiago, Metropolitan Region, Chile"},{"name":"School of Medicine, Universidad Andres Bello, Santiago, Metropolitan Region, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0003-6819-5094","authenticated-orcid":false,"given":"Javiera V","family":"Cornejo Pe\u00f1a","sequence":"additional","affiliation":[{"name":"School of Medicine, Universidad Andres Bello, Santiago, Metropolitan Region, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0113-820X","authenticated-orcid":false,"given":"Marcelo","family":"Castro Salas","sequence":"additional","affiliation":[{"name":"Department of Radiology, Clinica INDISA, Santiago, Metropolitan Region, Chile"},{"name":"School of Medicine, Universidad Andres Bello, Santiago, Metropolitan Region, Chile"},{"name":"Consultant Radiologist, Clinica INDISA, Santiago, Metropolitan Region, Chile"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2025,11,26]]},"reference":[{"key":"2025112619451329000_18.11.e267731.1","unstructured":"Liu JH , Manual MSD versi\u00f3n para profesionales . 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