“…Also, it is known that alumin salts can cause severe allergic reactions in susceptible individuals even after topical use. 16,17 Formalin instillation, one of the most effective treatments for severe HC, requires general anesthesia and is associated with important long-term complications including fibrosis of the bladder, urinary incontinence, papillary necrosis, vesicouretheral reflux and urinary tract obstruction with hydronephrosis. 18,19 Prostaglandins have been reported to have some beneficial effects when administered intravesically.…”