The patient was a 76 year old woman who had a history of porcine valve replacement for aortic stenosis and stroke with left hemiparesis, who became withdrawn and suspicious of her surroundings.

• 患者是76岁女性，曾因主动脉瓣狭窄接受过猪瓣膜移植，并因脑卒中导致过轻度偏瘫，此后性格孤僻并开始怀疑周围的事物。