Excluding confusable diseases in patients with presumptive diagnosis of interstitial cystitis: A large patient cohort study.

To analyze the results of excluding confusable diseases in patients with a presumptive diagnosis of interstitial cystitis (IC).

We retrospectively reviewed the electronic medical records of consecutive patients with IC between October 2005 and December 2019.

Patients with pelvic pain underwent an initial workup. Of these, 646 patients (164 men, 25.4%; 482 women, 74.6%) underwent observational cystoscopy under the suspicion of IC. Fourteen patients had genitourinary tract malignancies (2.2%) (bladder cancer, n = 13; prostate cancer, n = 1). Of the 13 patients with bladder cancer, three were diagnosed during initial observation cystoscopy. The remaining 10 patients were diagnosed during subsequent follow-up cystoscopic surgery. Urinary tuberculosis was identified in seven (1.1%) of 646 patients during the examination. Five (0.8%) of the six patients with suspected urinary tuberculosis at baseline imaging were positive for tuberculosis in the acid-fast bacillus test. One patient developed tuberculous granulomas in the bladder tissue after a cystectomy for intractable pelvic pain.

Our results show that continuous efforts to rule out bladder tumors or tuberculosis are still essential in the follow up of patients with suspected IC, even if these diseases are not excluded at the initial examination. Imaging studies are necessary to rule out tuberculosis.

International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics. 2024 Aug 11 [Epub ahead of print]

Hyun Ju Jeong, Yu Jin Kang, Min Soo Choo, Seong Jin Jeong, Seung-June Oh

Department of Medical Device Development, Seoul National University College of Medicine, Seoul, South Korea., Department of Urology, Pohang St. Mary's Hospital, Pohang-si, Gyeongsangbuk-do, South Korea., Department of Urology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, South Korea.