Penile Curvature (Peyronie's Disease) | NIDDK - Curved penis effect
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Peyronie's (pay-roe-NEEZ) disease is a noncancerous condition resulting from fibrous scar tissue that develops on the. It's common for the penis to curve slightly to the left or right when it's erect. Peyronie's disease causes the penis to become curved when it's erect. a curve in the penis when it's erect (usually it curves upwards).