Tsuda Hiromasa, Shinozaki Yukiko, Tanaka Kozue, Miura Yoshiharu, Kishida Shuji, Karasawa Katsuyuki
Department of Neurology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Japan.
Intern Med. 2012;51(16):2217-9. doi: 10.2169/internalmedicine.51.7806. Epub 2012 Aug 15.
A 71-year-old man with hyperlipidemia abruptly developed left-sided isolated shoulder palsy. Cranial magnetic resonance imaging demonstrated infarction of the cortical branch of the right middle cerebral artery (MCA). In the primary motor cortex, there is broad somatotopic representation of various body parts in a particular arrangement, and the area corresponding to the shoulder is very small. Consequently, there have been only 3 reported cases of isolated shoulder palsy due to cerebral infarction, and its vascular supply remains uncertain. The present case indicates that the corresponding area to the shoulder receives its blood from the cortical branch of the MCA.
一名71岁的高脂血症男性突然出现左侧孤立性肩部麻痹。头颅磁共振成像显示右侧大脑中动脉（MCA）皮质支梗死。在初级运动皮层中，各种身体部位以特定排列方式存在广泛的躯体定位表征，而对应肩部的区域非常小。因此，仅有3例脑梗死导致孤立性肩部麻痹的病例报道，其血管供应仍不明确。本病例表明，肩部的对应区域由MCA的皮质支供血。
