Hypospadias
A birth defect of the penis involving the urethra (the transport tube leading from the bladder to discharge urine outside the body). The urethra in the male normally travels through the full length of the penis so that the stream of urine comes from the usual urethral opening at the tip of the penis. However, in hypospadias the urethra does not go all the way through the penis but, instead, opens prematurely on the underside of the shaft of the penis or below the penis. Hypospadias can occur as an isolated birth defect, the only one in the child, or it can be just one component in a complex syndrome of multiple congenital malformations. It has been reported that hypospadias is more common in the sons of older mothers. However, this needs to be confirmed and a possible effect of advanced maternal age needs to be distinguished from that of advanced paternal age. (With older fathers, the risk of new mutations increases for a number of birth defects.) In the slightest ("first-degree") sort of hypospadias, the urethral opening is below the tip but still nearby (on what is called the glans). In moderate ("second-degree") hypospadias, the urethra opens closer to the body on the underside of the shaft of the penis. In severe ("third-degree") hypospadias, the urethal opening is below the penis on the skin and this is called a perineal hypospadias. In a child with hypospadias, the urine comes from an opening that is on the underside of the penis or below the penis. With moderate-to-severe degrees of hypospadias, the boy will therefore usually sit to urinate. Some cases of first-degree hypospadias are so mild as to not require treatment. If the hypospadias needs to be repaired, this is done by surgery. The aim is to repair and reconstruct the urethra. Depending on the degree of the hypospadias, the surgery can range from relatively simple to very challenging. The opposite of hypospadias is epispadias, a less common birth defect in which the urethra opens prematurely on the upperside of the penis or above it.
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A developmental anomaly characterized by a defect on the ventral surface of the penis so that the urethral meatus is proximal to its normal glanular location; may be associated with chordee; also a similar defect in the female in which the urethra opens into the vagina. Cf.:epispadias. SYN: urogenital sinus anomaly. [hypo- + G. spao, to tear or gouge]
- balanic h. SYN: glanular h..
- perineal h. h. in which the urethral meatus opens in the perineum near the anus; the scrotum is usually cleft.
- scrotal h. h. with the urethral opening on the scrotal surface.
- subcoronal h. malposition of the meatus in the coronal sulcus.

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hy·po·spa·di·as .hī-pə-'spād-ē-əs n an abnormality of the penis in which the urethra opens on the underside

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n.
a congenital abnormality in which the opening of the urethra is on the underside of the penis: either on the glans penis (glandular hypospadias), at the junction of the glans with the shaft (coronal hypospadias), or on the shaft itself (penile hypospadias). All varieties can be treated surgically, and neither micturition nor sexual function need be impaired. See MAGPI operation.

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hy·po·spa·di·as (hi″po-spaґde-əs) [hypo- + Gr. spadōn a cleft or rent] a developmental anomaly in which the urethra opens inferior to its usual location; usually seen in males with the opening on the underside of the penis or on the perineum. See also female h.

Medical dictionary. 2011.

Look at other dictionaries:

  • hypospadias — [ ipɔspadjas ] n. m. • 1842; n. f. 1819 ; gr. hupospadias, de hupo (cf. hypo ) et span « déchirer » ♦ Pathol. Malformation de l urètre caractérisée par un méat urinaire situé à la face inférieure de la verge ou même au niveau du périnée (⇒… …   Encyclopédie Universelle

  • Hypospadias — Hy po*spa di*as, n. [NL., fr. Gr. ypo beneath + spa n to draw, tear.] (Med.) A deformity of the penis, in which the urethra opens upon its under surface. [1913 Webster] …   The Collaborative International Dictionary of English

  • Hypospadias — DiseasesDB = 29907 MedlinePlus = 001286 eMedicineSubj = ped eMedicineTopic = 1136 MeshID = Hypospadias is a birth defect of the urethra in the male that involves an abnormally placed urinary meatus (opening). Instead of opening at the tip of the… …   Wikipedia

  • Hypospadias — Pénis en érection présentant une hypospadias. L’hypospadias est une malformation du fœtus masculin, qui se manifeste par l ouverture de l urètre dans la face inférieure du pénis au lieu de son extrémité. Ce type de malformation semble en… …   Wikipédia en Français

  • hypospadias — A birth defect in which the opening of the urethra (the tube through which urine leaves the body) is not in its normal place. In males with hypospadias, the urethra opens on the underside of the penis or between the anus and the scrotum. In… …   English dictionary of cancer terms

  • hypospadias — n. a congenital abnormality in which the opening of the urethra is on the underside of the penis: either on the glans penis (glandular hypospadias), at the junction of the glans with the shaft (coronal hypospadias), or on the shaft itself (penile …   The new mediacal dictionary

  • hypospadias — noun Etymology: New Latin, from Greek, man with hypospadias, from hypo + spadias, from spad , spas something torn, from span to tear, pluck off Date: circa 1855 an abnormality of the penis in which the urethra opens on the undersurface …   New Collegiate Dictionary

  • hypospadias — [ˌhʌɪpəʊ speɪdɪəs] noun Medicine a congenital condition in males in which the opening of the urethra is on the underside of the penis. Origin C19: from Gk hupospadias person having hypospadias …   English new terms dictionary

  • hypospadias — noun A birth defect of the male urethra that involves an abnormally placed urinary meatus …   Wiktionary

  • hypospadias — (i po spa di as ) s. m. Terme de médecine. Vice de conformation des parties génitales du sexe masculin, consistant en ce que l urètre s ouvre au dessous de la verge, en un point quelconque. ÉTYMOLOGIE    En grec, terme dérivé du mot signifiant au …   Dictionnaire de la Langue Française d'Émile Littré

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