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Representative cystoscopic images from patients with nonulcerative (A and B) and ulcerative (C and D) IC/PBS. Urine collected before cystoscopy was used to confirm ulcer, characterized by mucosal bleeding, and inflamed tissue in ulcerative group, and absent ulcer in nonulcerative group. Glomerulations (pinpoint petechial hemorrhages) were noted in nonulcerative group.
