Endometriosis of bladder was found in 1 patient by routine checkup and in 2 by periodic abdominal pain and bladder irritation during the menses ( one with urodynia and hematuria, another with precipitant urination and urinary frequency). 2例出现与月经有关的周期性腹痛及膀胱刺激征(1例表现为尿痛及血尿,1例表现为尿急、尿频)。