{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,27]],"date-time":"2025-10-27T11:02:32Z","timestamp":1761562952290,"version":"3.44.0"},"reference-count":12,"publisher":"BMJ","issue":"2","license":[{"start":{"date-parts":[[2023,2,28]],"date-time":"2023-02-28T00:00:00Z","timestamp":1677542400000},"content-version":"unspecified","delay-in-days":27,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2023,1,5]]},"published-print":{"date-parts":[[2023,2]]},"abstract":"<jats:p>Spinal fusion surgery is the most commonly performed orthopaedic surgical procedure. However, subdural hygroma occurrence is a very rare complication after revision spinal fusion surgery. Here, we report a case of revision lumbar fusion surgery at the L3\u20134 level. The patient developed acute conus medullaris syndrome at 10 days postoperatively. MRI showed a subdural, extra-arachnoid area fluid collection following the T12\u2013L2, cephalad to the area of revision spinal fusion. When patients have a decreased motor grade, difficulty in voiding urine and neurological abnormalities after lumbar spine surgery, conus medullaris syndrome with a possible occurrence of subdural hygroma should be considered. In this situation, immediate imaging investigations and emergency surgery might be necessary to reduce the pressure on the spinal cord.<\/jats:p>","DOI":"10.1136\/bcr-2022-253760","type":"journal-article","created":{"date-parts":[[2023,2,28]],"date-time":"2023-02-28T10:55:18Z","timestamp":1677581718000},"page":"e253760","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":1,"title":["Subdural hygroma as a rare complication after revision spine surgery"],"prefix":"10.1136","volume":"16","author":[{"given":"Yung","family":"Park","sequence":"first","affiliation":[{"name":"Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Korea (the Republic of)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chang-Min","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Korea (the Republic of)"},{"name":"Department of Orthopedic Surgery, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Korea (the Republic of)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joong-Won","family":"Ha","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Korea (the Republic of)"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jae-Won","family":"Shin","sequence":"additional","affiliation":[{"name":"Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang, Korea (the Republic of)"},{"name":"Department of Orthopedic Surgery, Yonsei University College of Medicine, Seodaemun-gu, Seoul, Korea (the Republic of)"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2023,2,28]]},"reference":[{"key":"2025082702114342000_16.2.e253760.1","first-page":"5789504","article-title":"Epidural anesthesia complicated by subdural hygromas and a subdural hematoma","volume":"2016","author":"Vien","year":"2016","journal-title":"Case Rep Anesthesiol"},{"key":"2025082702114342000_16.2.e253760.2","first-page":"E465","article-title":"Reversal of progressive conscious disturbance with epidural blood patch for cerebrospinal fluid leakage at C2 level","volume":"20","author":"Lai","year":"2017","journal-title":"Pain Physician"},{"key":"2025082702114342000_16.2.e253760.3","doi-asserted-by":"crossref","first-page":"752","DOI":"10.3171\/jns.2005.103.4.0752","article-title":"Acute obstructive hydrocephalus associated with infratentorial subdural hygromas complicating Chiari malformation type I decompression. 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