患者,男,72岁,高血压病史20年,2012年3月31日上午因头痛剧烈来院检查;CT显示桥脑左前方梭形高密度影,考虑椎基底动脉瘤可能(图1)。行MRI检查显示桥脑左前方梭形、不规则形短T1短T2信号、混杂有条状稍长T1信号,T2-flair序列及DWI序列呈低信号、近桥脑侧线条样稍高信号,病变塑形生长、随桥脑前间隙而存在(图4)。MRA显示椎基底动脉形态 Patients, male, 72 years old, with a history of 20 years of hypertension, March 31, 2012 due to severe headache to the hospital for examination; CT showed pontine left anterior fusiform high density, vertebrobasilar aneurysm may be considered (Figure 1). MRI examination showed that the left anterior pons in the pons were irregular in shape with short T1 short T2 signals, short T1 signals mixed in a narrow shape, low signals in T2-flair sequences and DWI sequences, Lesions are shaped and grow with the pontine anterior gap (Figure 4). MRA shows vertebrobasilar morphology