患者男,55岁。阵发性头痛、头昏数年。体检:未见明显异常。MRI平扫:左枕部见大小约38mm×37mm×50mm异常信号区,T1WI呈略低信号(图1),T2WI呈等高混杂信号,内见短条状高信号,左枕叶部分脑沟、脑回受压,中线结构居中(图2)。增强扫描,病灶明显强化,其内见点条状及结节状强化,未见 Male patient, 55 years old. Paroxysmal headache, dizziness for years. Physical examination: no obvious abnormalities. MRI plain: the left occipital see the size of about 38mm × 37mm × 50mm abnormal signal area, T1WI showed a slightly lower signal (Figure 1), T2WI was mixed signal of the same height, see the short strip signal, the left occipital part of the sulci , Back to the pressure of the brain, the center line structure (Figure 2). Enhanced scan, the lesion was significantly enhanced, the see within the strip and nodular enhancement, no