{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T09:40:12Z","timestamp":1756287612734,"version":"3.44.0"},"reference-count":11,"publisher":"BMJ","issue":"6","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2025,6,11]]},"published-print":{"date-parts":[[2025,6]]},"abstract":"<jats:p>Angiolipomas in the lumbar spine are rare, with only a few reported cases presenting in a dumbbell shape. We report a case of a dumbbell-shaped lumbar angiolipoma extending not only into the spinal canal and the intervertebral foramen but also extensively into the iliopsoas muscle. A male patient in his early 60s, presenting with an 8-month history of low back pain and bilateral lower extremity pain, was referred to our department for treatment. MRI revealed a large dumbbell-shaped tumour located around the L2\/3 spinal canal and extending into the left iliopsoas muscle. Angiolipoma was suspected, and preoperative embolisation followed by surgery using both anterior and posterior approaches was performed. Complete resection was achieved, and the patient\u2019s pain significantly improved without major postoperative complications. This surgical procedure may be considered an effective approach for the resection of dumbbell-shaped angiolipomas with extensive extraforaminal distribution.<\/jats:p>","DOI":"10.1136\/bcr-2024-263228","type":"journal-article","created":{"date-parts":[[2025,6,22]],"date-time":"2025-06-22T20:40:16Z","timestamp":1750624816000},"page":"e263228","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Dumbbell-shaped angiolipoma at the lumbar spine"],"prefix":"10.1136","volume":"18","author":[{"given":"Yuki","family":"Yamai","sequence":"first","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8267-5789","authenticated-orcid":false,"given":"Narihito","family":"Nagoshi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miho","family":"Kawaida","sequence":"additional","affiliation":[{"name":"Division of Diagnostic Pathology, Keio University Hospital, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Satoshi","family":"Suzuki","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yohei","family":"Takahashi","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Satoshi","family":"Nori","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tsuji","family":"Osahiko","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitsuru","family":"Yagi","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, School of Medicine International University of Health and Welfare, Narita, Chiba Prefecture, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kota","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Morio","family":"Matsumoto","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masaya","family":"Nakamura","sequence":"additional","affiliation":[{"name":"Department of Orthopaedic Surgery, Keio University School of Medicine, Shinjuku, Tokyo, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2025,6,22]]},"reference":[{"key":"2025082702244773000_18.6.e263228.1","doi-asserted-by":"publisher","DOI":"10.1007\/s00586-008-0858-8"},{"key":"2025082702244773000_18.6.e263228.2","doi-asserted-by":"crossref","DOI":"10.14444\/2067","article-title":"Thoracic epidural spinal angiolipoma with coexisting lumbar spinal stenosis: Case report and review of the literature","volume":"9","author":"Benvenutti-Regato","year":"2015","journal-title":"Int J Spine Surg"},{"key":"2025082702244773000_18.6.e263228.3","doi-asserted-by":"publisher","DOI":"10.1227\/00006123-199210000-00023"},{"key":"2025082702244773000_18.6.e263228.4","doi-asserted-by":"crossref","first-page":"20","DOI":"10.2174\/1874205X01711010020","article-title":"Lumbar Spinal Angiolipoma with Expanding Left Neural Foramen Mimicking Lumbar Schwannoma; Case Report and Review of The Literature","volume":"11","author":"Akyuva","year":"2017","journal-title":"Open Neurol J"},{"key":"2025082702244773000_18.6.e263228.5","doi-asserted-by":"crossref","first-page":"219","DOI":"10.1023\/A:1006492629326","article-title":"Angiolipomas of the central nervous system","volume":"49","author":"Andaluz","year":"2000","journal-title":"J Neurooncol"},{"key":"2025082702244773000_18.6.e263228.6","doi-asserted-by":"publisher","DOI":"10.1016\/S1529-9430(13)00329-X"},{"key":"2025082702244773000_18.6.e263228.7","doi-asserted-by":"crossref","first-page":"E748","DOI":"10.1097\/BRS.0000000000001945","article-title":"Surgical Strategy for Spinal Dumbbell Tumors: A New Classification and Surgical Outcomes","volume":"42","author":"Liu","year":"2017","journal-title":"Spine (Phila Pa 1976)"},{"key":"2025082702244773000_18.6.e263228.8","doi-asserted-by":"crossref","first-page":"91","DOI":"10.1016\/j.clineuro.2018.03.005","article-title":"Minimally invasive resection of large dumbbell tumors of the lumbar spine: Advantages and pitfalls","volume":"168","author":"Zairi","year":"2018","journal-title":"Clin Neurol Neurosurg"},{"key":"2025082702244773000_18.6.e263228.9","doi-asserted-by":"crossref","first-page":"456","DOI":"10.1097\/01.bsd.0000109834.59382.d5","article-title":"Infiltrating spinal angiolipoma: a case report and review of the literature","volume":"17","author":"Rabin","year":"2004","journal-title":"J Spinal Discord Tech"},{"key":"2025082702244773000_18.6.e263228.10","first-page":"224","article-title":"A case of spinal angiolipoma that was successfully treated with preoperative arterial embolization","volume":"50","author":"Ishikawa","year":"2019","journal-title":"Kanto J Orthop Traumatol"},{"key":"2025082702244773000_18.6.e263228.11","doi-asserted-by":"crossref","first-page":"4272","DOI":"10.1007\/s00586-023-07898-9","article-title":"Comparison of intraoperative blood loss and perioperative complications between preoperative embolization and nonembolization combined with spinal tumor surgeries: a systematic review and meta-analysis","volume":"32","author":"Qiao","year":"2023","journal-title":"Eur Spine J"}],"container-title":["BMJ Case Reports"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bcr-2024-263228","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,27]],"date-time":"2025-08-27T09:24:54Z","timestamp":1756286694000},"score":1,"resource":{"primary":{"URL":"https:\/\/casereports.bmj.com\/lookup\/doi\/10.1136\/bcr-2024-263228"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,6]]},"references-count":11,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2025,6,22]]},"published-print":{"date-parts":[[2025,6]]}},"alternative-id":["10.1136\/bcr-2024-263228"],"URL":"https:\/\/doi.org\/10.1136\/bcr-2024-263228","relation":{},"ISSN":["1757-790X"],"issn-type":[{"type":"electronic","value":"1757-790X"}],"subject":[],"published":{"date-parts":[[2025,6]]}}}