epispadia MP:0003598 MPheno.ontology congenital absence of the upper wall of the urethra, occurring in both sexes, but more often in the male, with the urethral opening somewhere on the dorsum of the penis at any point below the internal sphincter; in females, the malformed urethral opening is often located between the clitoris and the labia, or in the abdomen epispadias hyperspadia hyperspadias abnormal penis morphology abnormal external urethral orifice morphology