患者男,80岁。尿频、尿急、分段排尿、排尿困难6年,3天前因受凉后出现不能自主排尿,伴下腹部憋痛,遂来院就诊。体检:膀胱区膨隆、上缘达脐上一指,压痛,可触及球形肿块,叩诊实音。超声:膀胱后方可见大小约107 mm×90 mm×82 mm的囊性无回声区,边缘光滑、整齐,并见宽约3 mm的缺口 Male patient, 80 years old. Urinary frequency, urgency, segmental urination, dysuria 6 years, 3 days ago due to cold after involuntary urination, accompanied by abdominal abscess, then came to hospital. Physical examination: bulging bladder area, on the edge of the umbilical on a finger, tenderness, palpable spherical mass, percussion real audio. Ultrasound: A cystic anechoic area of ​​approximately 107 mm × 90 mm × 82 mm is visible at the back of the bladder with a smooth, neat edge and a 3 mm wide gap