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12.4: Diagnosis

Last updated

Sep 28, 2020
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- 12.3: Clinical Features
- 12.5: Treatment

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Usually confirmed on cystoscopy (under general or regional anaesthesia): Petechial bleeding is seen from the bladder wall (particularly after second filling of the bladder with irrigation fluid). There is usually a small bladder capacity and rarely an area of ulceration of the bladder wall (Hunner’s ulcer).

Differential Diagnosis

IC is a diagnosis of exclusion.

Cystitis – urine dipstick and culture
TB – urine for AFBs and TB culture
Bladder carcinoma (particularly CIS) – urine cytology
Bladder stone – U/S and cystoscopy
Pelvic infection
Endometriosis Intravesical Potassium Test If instillation of a solution with high potassium concentration reproduces the patient’s pain this is diagnositic of IC.

Differential Diagnosis

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