title: Spontaneous resolution of an aneurysm arising from a penetrating branch of the middle cerebral artery.
abstract: Aneurysms of the penetrating branches of the middle cerebral artery are rare. Previous reports have concentrated on aneurysms that arise from the distal lenticulostriate artery where the natural history is unclear. Here, we report a case of a ruptured aneurysm located at the insular penetrating branch of the right middle cerebral artery, which was associated with an external capsular haematoma. The aneurysm persisted as shown by angiography at one month and the patient refused surgical treatment at that stage. Follow-up angiography two years later showed resolution of the aneurysm. The aetiologies and treatment options are reviewed.
authors.affiliation: Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, Ngan Shing Street, Shatin 1077, New Territories, Hong Kong SAR, China.
authors.forename: George K C
authors.initials: GK
authors.lastname: Wong
authors.forename: H L
authors.initials: HL
authors.lastname: Chou
authors.forename: W S
authors.initials: WS
authors.lastname: Poon
authors.forename: X L
authors.initials: XL
authors.lastname: Zhu
authors.forename: Simon C H
authors.initials: SC
authors.lastname: Yu
authors.forename: Anil T
authors.initials: AT
authors.lastname: Ahuja
mesh_terms: D000328:Adult; D017542:Aneurysm, Ruptured / Q000150:complications / Q000473:pathology*; D002533:Cerebral Angiography / Q000379:methods; D006801:Humans; D002532:Intracranial Aneurysm / Q000150:complications / Q000473:pathology*; D008297:Male; D020768:Middle Cerebral Artery / Q000473:pathology*; D014057:Tomography, X-Ray Computed / Q000379:methods