Hyperbaric oxygen therapy for Wegener's granulomatosis with cyclophosphamide-induced hemorrhagic cystitis

A 49-year-old man with Wegener's granulomatosis, who had been treated with cyclophosphamide, was admitted to our hospital experiencing gross hematuria. The hemorrhage was refractory to multiple conventional treatments. It progressed but later was resolved after a course of hyperbaric oxygen therapy.