Epispadias

Congenital (at birth) malformation in which the opening of the urethra (from whence comes the urinary stream) is on the dorsum (topside) of the penis. Hypospadias is the corresponding malformation in which the opening of the urethra is on the ventral surface (underside) of the penis.

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A malformation in which the urethra opens on the dorsum of the penis; frequently associated with exstrophy of the bladder. [epi- + G. spao, to tear or gouge]

- balanitic e. excessively proximal position of meatus on dorsum of glans penis.

- coronal e. excessively proximal position of meatus in coronal sulcus.

- penile e. proximal position of urethral meatus on the dorsum of the penile shaft.

- penopubic e. position of the urethral meatus at junction of base of penis and lower abdominal wall.

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ep·i·spa·di·as .ep-ə-'spād-ē-əs n a congenital defect in which the urethra opens upon the upper surface of the penis

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n.

a congenital abnormality in which the opening of the urethra is on the dorsal (upper) surface of the penis. Surgical correction is carried out in infancy.

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epi·spa·di·as (ep″ĭ-spaґde-əs) [epi- + Gr. spadōn a rent] a developmental anomaly consisting of absence of the upper wall of the urethra, with various degrees of severity; it occurs in both sexes but is more common in males, with the urethral opening somewhere on the dorsum of the penis, manifested as a groove or cleft without a covering.