患者男性,42岁,反复发作阵发性头晕1年,伴恶心、眼花、面色苍白、出汗、心悸、气短。每7～10d 发作1次,每次持续2～3min～2h,多在小便时或小便后出现,发作时测血压波动于26.6/17.3～21.3/13.3kPa,发作渐频入院.查体:体温36.7℃,脉博76次/min,血压16.0/10.6kPa,无浮肿及贫血。心肺肝脾无异常。上腹部未听到血管杂音.神经系统无异常。血尿常规、肝功、肾 The patient was a 42-year-old man with recurrent paroxysmal dizziness for 1 year with nausea, vertigo, paleness, sweating, palpitations, and shortness of breath. Every 7 ~ 10d attack 1, each time for 2 ~ 3min ~ 2h, more often during urination or after urination, blood pressure fluctuations occurred at the onset of 26.6/17.3 ~ 21.3/13.3kPa, attack gradually admitted to the hospital. Physical examination: body temperature 36.7°C, pulse rate 76 beats/min, blood pressure 16.0/10.6 kPa, no edema and anemia. Cardiopulmonary liver and spleen without exception. No vascular murmur was heard in the upper abdomen. There was no abnormality in the nervous system. Hematuria, liver function, kidney