{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,7]],"date-time":"2026-03-07T14:06:17Z","timestamp":1772892377601,"version":"3.50.1"},"reference-count":11,"publisher":"Scientific Scholar","content-domain":{"domain":["surgicalneurologyint.com"],"crossmark-restriction":true},"short-container-title":[],"abstract":"\nBackground: <\/jats:title>\nChronic encapsulated intracerebral hematoma (CEIH) is a rare condition with an unclear pathogenesis. Moreover, no consensus has been established regarding its treatment. Here, we report a case of juvenile subcortical CEIH successfully treated with complete resection, including the capsule.<\/jats:p>\n<\/jats:sec>\n\nCase Description: <\/jats:title>\nA 26-year-old woman with no notable medical history had experienced headaches for 2 months and 3 weeks before presentation and underwent extraction of the right third molar 1 week before admission. She presented to our hospital complaining of a headache. Visual field testing revealed left upper quadrantanopia. Head CT showed a 5 cm ring-shaped hyperdense lesion in the right temporal lobe, and cerebral angiography revealed no significant vascular abnormalities. On hospital day 10, she underwent craniotomy and removal of the lesion. Intraoperative findings revealed that the hematoma was encapsulated, and en bloc<\/jats:italic> resection was achieved. Histopathological examination showed fibrous connective tissue with fibroblast proliferation covering a hematoma composed of fibrin and red blood cells, consistent with CEIH. The postoperative course was smooth, no new neurological deficits were observed, and both the headache and visual field disturbance improved. She was discharged home 2 weeks after surgery.<\/jats:p>\n<\/jats:sec>\n\nConclusion: <\/jats:title>\nAlthough the pathogenesis of CEIH remains unclear and there is no consensus on treatment, complete resection, including the capsule, was considered the appropriate therapeutic approach in this case, given reports of recurrence and poor outcomes associated with residual capsule tissue or coexistence with cavernous malformations.<\/jats:p>\n<\/jats:sec>","DOI":"10.25259\/sni_454_2025","type":"journal-article","created":{"date-parts":[[2025,8,22]],"date-time":"2025-08-22T09:46:58Z","timestamp":1755856018000},"page":"353","update-policy":"https:\/\/doi.org\/10.25259\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["A case of juvenile chronic encapsulated intracerebral hematoma requiring differential diagnosis, successfully treated with craniotomy and hematoma evacuation"],"prefix":"10.25259","volume":"16","author":[{"given":"Yodai","family":"Kikuchi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shogo","family":"Dofuku","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rika","family":"Nakamura","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ken","family":"Kazama","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hideaki","family":"Imai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"10894","published-online":{"date-parts":[[2025,8,22]]},"reference":[{"key":"10.25259\/SNI_454_2025\/ref-1","doi-asserted-by":"crossref","first-page":"1296","DOI":"10.1136\/jnnp.52.11.1296","article-title":"Chronic encapsulated intracerebral haematoma: Pathogenetic and diagnostic 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Geka"},{"key":"10.25259\/SNI_454_2025\/ref-5","first-page":"23","article-title":"A case of chronic encapsulated intracerebral hematoma that was difficult to diagnose","volume":"35","author":"Sakaguchi","year":"2023","journal-title":"J Jpn Soc Neurol Emerg Crit Care"},{"key":"10.25259\/SNI_454_2025\/ref-6","first-page":"1000","article-title":"Chronic encapsulated intracerebral hematomas: A systematic review","volume":"33","author":"Scalia","year":"2022","journal-title":"Br J Neurosurg"},{"key":"10.25259\/SNI_454_2025\/ref-7","doi-asserted-by":"crossref","first-page":"51","DOI":"10.2176\/nmccrj.cr.2016-0197","article-title":"Chronic encapsulated intracerebral hematoma: Endoscopic removal as minimally invasive surgery for a patient with alcoholic cirrhosis","volume":"4","author":"Shibao","year":"2017","journal-title":"NMC Case Rep J"},{"key":"10.25259\/SNI_454_2025\/ref-8","first-page":"961","article-title":"Chronic encapsulated intracerebral hematoma associated with arteriovenous malformation, shrinking after feeder embolization with clinical improvement: A case report","volume":"47","author":"Sonoda","year":"2019","journal-title":"No Shinkei Geka"},{"key":"10.25259\/SNI_454_2025\/ref-9","doi-asserted-by":"crossref","first-page":"134","DOI":"10.7887\/jcns.26.134","article-title":"Chronic encapsulated intracerebral hematoma: A report of two cases and a review of the literature","volume":"26","author":"Tsuji","year":"2016","journal-title":"J Jpn Neurosurg"},{"key":"10.25259\/SNI_454_2025\/ref-10","doi-asserted-by":"crossref","first-page":"103","DOI":"10.1227\/00006123-197803000-00004","article-title":"Chronic intracerebral hematoma","volume":"2","author":"Yashon","year":"1978","journal-title":"Neurosurgery"},{"key":"10.25259\/SNI_454_2025\/ref-11","doi-asserted-by":"crossref","first-page":"600","DOI":"10.3995\/jstroke.30.600","article-title":"A case of chronic encapsulated intracerebral hematoma treated by endoscopic hematoma 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