伴胼胝体压部可逆性病变的轻度脑影脑病

Mild encephalitis/encephalopathy with a reversible splenial lesion in the corpus cailosum

伴胼胝体压部可逆性病变的轻度脑炎/脑病（mild encephalitis/encephalopathy with a reversible splenial lesion，MERS）是一种临床－影像学综合征，根据影像学受累部位分为MERS Ⅰ型和MERS Ⅱ型。儿童患者其病因主要以感染为主。该病临床表现为意识障碍、头痛、呕吐、惊厥等急性轻微脑炎或脑病症状，头颅磁共振成像（MRI）显示胼胝体压部受累为主的病灶。临床症状及MRI病灶多在1个月内消失，预后良好。需要早期识别，避免过度治疗。

Mild encephalitis/encephalopathy with a reversible splenial lesion （MERS）in the corpus callosum is a clinical-radiological syndrome with typical imaging characteristics, which can be divided into 2 types （MERS Ⅰ and MERS Ⅱ）according to the affected parts.The main cause is infection in children.Patients can be presented with symptoms that are common for acute mild encephalitis or encephalopathy such as disturbance of consciousness, hea-dache, vomiting, seizure.Brain magnetic resonance imaging（MRI） indicates lesions in the splenium of the corpus callosum.The symptoms and brain MRI lesions disappear almost within 1 month, and the prognosis is usually good.Early recognition is necessary and excessive treatment should be avoided.