Umansky F, Dujovny M, Ausman J I, Diaz F G, Mirchandani H G
Department of Neurological Surgery, Henry Ford Hospital, Detroit, Michigan.
Neurosurgery. 1988 Jun;22(6 Pt 1):1023-7. doi: 10.1227/00006123-198806010-00008.
The microvascular anatomy of the main trunk and divisions of the middle cerebral artery was studied in 104 unfixed brain hemispheres injected with polyester resin and dissected under the operating microscope. The following anomalies and variations of the middle cerebral artery were found: fenestration (1 case; 1%), located on the first 4 mm of the main trunk of the middle cerebral artery; duplication (1 case; 1%), with vessels arising from the internal carotid artery; accessory middle cerebral artery (2 cases; 2%), originating on the A1 segment of the anterior cerebral artery; single-trunk type of middle cerebral artery (4 cases; 4%), with no division of its main trunk; quadrifurcation (4 cases; 4%), in which the main trunk of the middle cerebral artery divided into four secondary trunks. The clinical implications of these anatomical findings are discussed, and photographs of representative specimens illustrate the anomalies.
在104个未固定的脑半球中，注入聚酯树脂后在手术显微镜下进行解剖，研究大脑中动脉主干及其分支的微血管解剖结构。发现大脑中动脉存在以下异常和变异情况：开窗畸形（1例，占1%），位于大脑中动脉主干起始的4毫米处；重复畸形（1例，占1%），血管发自颈内动脉；大脑中动脉副支（2例，占2%），起源于大脑前动脉A1段；大脑中动脉单干型（4例，占4%），其主干未分支；四叉畸形（4例，占4%），大脑中动脉主干分为4个二级分支。文中讨论了这些解剖学发现的临床意义，代表性标本的照片展示了这些异常情况。
