Mahale Rohan R, Mehta Anish, John Aju Abraham, Javali Mahendra, Abbas Mirza Masoom, Rangasetty Srinivasa
Department of Neurology, Mathikere Sampangappa Ramaiah Medical College and Hospital, Bangalore, Karnataka, India.
Ann Indian Acad Neurol. 2015 Jul-Sep;18(3):335-7. doi: 10.4103/0972-2327.157180.
"Eight-and-a-half" syndrome is a rare condition involving the ipsilateral abducens nucleus or paramedian pontine reticular formation (PPRF), the ipsilateral medial longitudinal fasciculus (MLF), and the adjacent facial colliculus/facial nerve fascicle. The condition is often caused by a lesion (vascular or demyelinating) in the dorsal tegmentum of the caudal pons. There are new variants of this syndrome caused by extension of lesion to involve new adjacent structures in pontine tegmentum. We report two patients with different etiology presenting with clinical features suggestive of eight-and-a-half syndrome associated with hemiataxia representing "nine" syndrome (8½ + ½ = 9) adding new dimension to "eight-and-a-half" syndrome.
“8.5”综合征是一种罕见病症，累及同侧展神经核或脑桥旁正中网状结构（PPRF）、同侧内侧纵束（MLF）以及相邻的面神经丘/面神经束。该病症常由尾侧脑桥背侧被盖部的病变（血管性或脱髓鞘性）引起。由于病变扩展累及脑桥被盖部新的相邻结构，出现了此综合征的新变体。我们报告了两名病因不同的患者，其临床特征提示为“8.5”综合征伴偏侧共济失调，代表“9”综合征（8.5 + 0.5 = 9），为“8.5”综合征增添了新的维度。
