{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,16]],"date-time":"2026-09-16T17:28:46Z","timestamp":1789579726929,"version":"build-2803163510"},"reference-count":19,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2013,5]]},"abstract":"<jats:p>A spontaneous subarachnoid hemorrhage (SAH) from the middle cerebral artery is most commonly caused by the rupture of saccular aneurysms and rarely by fusiform aneurysms or arterial dissections\/dissecting aneurysms. To the authors' knowledge, this is the first report of an intraarterial neoplasm causing an SAH. A 44-year-old woman presented with an SAH in the basal cisterns. Subsequent internal carotid artery angiography demonstrated a small bulge on the superior wall of the horizontal (M<jats:sub>1<\/jats:sub>) segment of the middle cerebral artery. However, a pterional craniotomy revealed a well-circumscribed solitary tumor with a diameter of 15 mm involving the superior wall of the M<jats:sub>1<\/jats:sub> segment as the cause of the SAH. Pathological examination demonstrated typical findings of a schwannoma, elongated cells with tapered, spindle-shaped nuclei and indistinct cell borders, and diffuse immunoreactivity for the S100 protein.<\/jats:p>","DOI":"10.3171\/2013.2.jns122103","type":"journal-article","created":{"date-parts":[[2013,3,22]],"date-time":"2013-03-22T14:05:25Z","timestamp":1363961125000},"page":"1069-1071","source":"Crossref","is-referenced-by-count":7,"title":["Intraarterial schwannoma in horizontal segment of middle cerebral artery causing subarachnoid hemorrhage"],"prefix":"10.3171","volume":"118","author":[{"given":"Jaechan","family":"Park","sequence":"first","affiliation":[{"name":"Departments of Neurosurgery and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dakeun","family":"Lee","sequence":"additional","affiliation":[{"name":"Pathology, Cardiocerebrovascular Center, Kyungpook National University, Daegu, Republic of Korea"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1754","reference":[{"key":"b1-jns122103","series-title":"Acta Physiol Scand Suppl","first-page":"9","article-title":"Perivascular nerve types supplying cerebral blood vessels of the gerbil","volume":"552","author":"Alafaci","year":"1986"},{"key":"b2-jns122103","series-title":"Neurosurgery","doi-asserted-by":"publisher","first-page":"645","DOI":"10.1227\/00006123-198510000-00019","article-title":"Subarachnoid hemorrhage from a peripheral intracranial aneurysm associated with malignant glioma: report of a case","volume":"17","author":"Andrews","year":"1985"},{"key":"b3-jns122103","series-title":"Acta Neurochir (Wien)","doi-asserted-by":"publisher","first-page":"104","DOI":"10.1007\/BF01541792","article-title":"Central projections of the sensory innervation to the middle cerebral artery in the squirrel monkey","volume":"119","author":"Arbab","year":"1992"},{"key":"b4-jns122103","series-title":"Neuroradiology","doi-asserted-by":"publisher","first-page":"30","DOI":"10.1007\/BF00588429","article-title":"Peripheral cerebral aneurysm associated with a glioma","volume":"34","author":"Barker","year":"1992"},{"key":"b5-jns122103","series-title":"J Neurosurg","doi-asserted-by":"publisher","first-page":"217","DOI":"10.3171\/jns.1993.79.2.0217","article-title":"Intracranial parenchymal schwannoma. 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