{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,6]],"date-time":"2026-02-06T04:47:14Z","timestamp":1770353234043,"version":"3.49.0"},"reference-count":30,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"12","license":[{"start":{"date-parts":[[2023,3,20]],"date-time":"2023-03-20T00:00:00Z","timestamp":1679270400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,3,20]]},"abstract":"<jats:sec>\n                    <jats:title>BACKGROUND<\/jats:title>\n                    <jats:p>Sinus pericranii (SP) is a rare vascular anomaly, with an uncertain etiology. Often discovered as superficial lesions, they can be primary or secondary in nature. Herein, we report a rare case of SP in the setting of a large posterior fossa pilocytic astrocytoma associated with a significant venous network.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>OBSERVATIONS<\/jats:title>\n                    <jats:p>A 12-year-old male presented with acute clinical deterioration in extremis with a 2-month history of lethargy and headaches. Outside plain computed tomography imaging revealed a large posterior fossa cystic lesion, probably a tumor, with severe hydrocephalus. There was also a midline small skull defect at the opisthocranion, without visible vascular anomalies. An external ventricular drain was placed with rapid recovery. Contrast imaging revealed a large midline SP emanating from occipital bone with a large intraosseous, and subcutaneous venous plexus in the midline draining inferiorly into venous plexus around the craniocervical junction. A posterior fossa craniotomy without contrast imaging could have resulted in catastrophic hemorrhage. A small modified off-center craniotomy provided access to the tumor with a gross total excision.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>LESSONS<\/jats:title>\n                    <jats:p>SP is a rare but significant phenomenon. Its presence does not necessarily preclude resection of underlying tumors, provided that a careful preoperative assessment of the venous anomaly is undertaken.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3171\/case2332","type":"journal-article","created":{"date-parts":[[2023,3,20]],"date-time":"2023-03-20T09:18:57Z","timestamp":1679303937000},"source":"Crossref","is-referenced-by-count":0,"title":["Sinus pericranii in the setting of a posterior fossa pilocytic astrocytoma: illustrative case"],"prefix":"10.3171","volume":"5","author":[{"given":"Youngkyung","family":"Jung","sequence":"first","affiliation":[{"name":"Departments of Neurosurgery,"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jennifer L.","family":"Quon","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Hospital for Sick Children, Toronto, Ontario, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James M.","family":"Drake","sequence":"additional","affiliation":[{"name":"Departments of Neurosurgery,"},{"name":"Department of Neurosurgery, Hospital for Sick Children, Toronto, Ontario, Canada"},{"name":"Surgery, University of Toronto, Toronto, Ontario, Canada; and"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1754","reference":[{"issue":"6","key":"b1","series-title":"Neuroradiology","first-page":"505","article-title":"Sinus pericranii: diagnostic and therapeutic considerations in 15 patients","volume":"49","author":"Gandolfo C","year":"2007","unstructured":"Gandolfo C, Krings T, Alvarez H,  Sinus pericranii: diagnostic and therapeutic considerations in 15 patients. 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Am J Ophthalmol. 2000;129(2):254\u2013256.10682984"},{"key":"b4","series-title":"World Neurosurg","first-page":"14","article-title":"Epidermoid Cyst with Torcular Herophili Obstruction and Unusual Venous Drainage","volume":"128","author":"Yokota H","year":"2019","unstructured":"Yokota H, Noguchi H, Yokoyama K. Epidermoid Cyst with Torcular Herophili Obstruction and Unusual Venous Drainage. World Neurosurg. 2019;128:14\u201317.31054339"},{"issue":"6","key":"b5","series-title":"J Appl Physiol (1985)","first-page":"1843","article-title":"Understanding angiogenesis during aging: opportunities for discoveries and new models","volume":"125","author":"Hodges NA","year":"2018","unstructured":"Hodges NA, Suarez-Martinez AD, Murfee WL. Understanding angiogenesis during aging: opportunities for discoveries and new models. 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