The diagnostic and therapeutic efficacy of cystoscopy with hydrodistension and random biopsies in clinically suspected interstitial cystitis/bladder pain syndrome

•Histopathological analysis from random biopsies could distinguish bladder carcinoma from clinically suspected IC/BPS.•Hydrodistension is more likely to be effective when chronic pelvic pain is obviously alleviated.•The efficacy of hydrodistension could act in a certain period of time.