A Case of Purple Urine Bag Syndrome in a Patient with an Ileal Conduit

Purple urine bag syndrome (PUBS) is typically a benign condition in which the urine in a Foley bag becomes purple. This situation is thought to arise from a series of steps involving the conversion of tryptophan to pigmented indigo and indirubin. While there are multiple factors associated with PUBS, no definitive causative agent has been identified. Presented here is the case of a patient with an ileal conduit who developed purple urine during his hospitalization.