{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T07:19:30Z","timestamp":1765783170254,"version":"3.48.0"},"reference-count":15,"publisher":"BMJ","issue":"12","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2025,11,27]]},"published-print":{"date-parts":[[2025,12]]},"abstract":"<jats:p>A man in his 40s from a rural area presented with progressive pain and functional limitation of the right arm without trauma. Imaging revealed an aggressive lytic lesion with pathological fracture of the distal humerus. Staging studies excluded other lesions. Percutaneous biopsy confirmed osseous hydatid disease. Preoperative albendazole was administered, followed by wide en bloc resection of a 15\u2009cm humeral segment with preservation of neurovascular structures. Reconstruction was achieved using a modular distal humerus endoprosthesis. Postoperative albendazole continued for 6\u2009weeks. At 12 months, the patient was disease-free, with a painless range of motion from 0\u00b0 to 120\u00b0, full independence in daily activities and a Toronto Extremity Salvage Score of 75. This case demonstrates the importance of considering hydatid disease in the differential diagnosis of lytic bone lesions in endemic areas and supports limb-sparing reconstruction as a viable alternative.<\/jats:p>","DOI":"10.1136\/bcr-2025-269531","type":"journal-article","created":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T07:15:17Z","timestamp":1765782917000},"page":"e269531","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Hydatid disease of the distal humerus treated with wide resection and reconstruction with endoprosthesis"],"prefix":"10.1136","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3784-9804","authenticated-orcid":false,"given":"Jorge","family":"Cabrolier","sequence":"first","affiliation":[{"name":"Orthopedic Surgery, Universidad del Desarrollo Facultad de Medicina Clinica Alemana Departamento de Traumatolog\u00eda, Santiago, Chile"},{"name":"Orthopedic Surgery, Instituto Traumatol\u00f3gico Dr Teodoro Gebauer Weisser, Santiago, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Teresa","family":"Ruiz","sequence":"additional","affiliation":[{"name":"Universidad de Chile Facultad de Medicina, Santiago, Santiago Metropolitan Region, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel","family":"Carpio","sequence":"additional","affiliation":[{"name":"Orthopedic Surgery, Instituto Traumatol\u00f3gico Dr Teodoro Gebauer Weisser, Santiago, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando","family":"Borquez","sequence":"additional","affiliation":[{"name":"Orthopedic Surgery, Instituto Traumatol\u00f3gico Dr Teodoro Gebauer Weisser, Santiago, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jose Francisco","family":"Hardoy","sequence":"additional","affiliation":[{"name":"Orthopedic Surgery, Instituto Traumatol\u00f3gico Dr Teodoro Gebauer Weisser, Santiago, Chile"},{"name":"Clinica Santa Maria Servicio de Traumatologia y Ortopedia, Santiago, Santiago Metropolitan Region, Chile"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2025,12,14]]},"reference":[{"key":"2025121423151131000_18.12.e269531.1","first-page":"180","article-title":"Uncommon localizations of hydatid cyst","volume":"37","author":"Salamone","year":"2016","journal-title":"G Chir"},{"key":"2025121423151131000_18.12.e269531.2","doi-asserted-by":"crossref","first-page":"1075","DOI":"10.1080\/14787210.2017.1401466","article-title":"Management of osseous cystic echinococcosis","volume":"15","author":"Monge-Maillo","year":"2017","journal-title":"Expert Rev Anti Infect Ther"},{"key":"2025121423151131000_18.12.e269531.3","doi-asserted-by":"publisher","DOI":"10.1136\/pgmj.2007.057166"},{"key":"2025121423151131000_18.12.e269531.4","doi-asserted-by":"crossref","DOI":"10.2106\/JBJS.CC.M.00279","article-title":"Hydatid Disease of the Femur Treated with a Total Femoral Replacement: A Case Report","volume":"5","author":"Moore","year":"2015","journal-title":"JBJS Case Connect"},{"key":"2025121423151131000_18.12.e269531.5","doi-asserted-by":"crossref","first-page":"4526","DOI":"10.1016\/j.radcr.2024.07.023","article-title":"Hydatid cyst of the humerus presenting as a suspicious lesion: A rare case report and review of literature","volume":"19","author":"Faraj","year":"2024","journal-title":"Radiol Case Rep"},{"key":"2025121423151131000_18.12.e269531.6","doi-asserted-by":"crossref","first-page":"296","DOI":"10.1016\/j.ijscr.2019.10.083","article-title":"Hydatidosis of the complete humerus. 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