megacolon


megacolon
A condition of extreme dilation of the colon. SYN: giant colon.
- acquired m. m. occurring on the basis of an acquired disease; occurs in inflammatory bowel disease (toxic m.) and Chagas disease (South American trypanosomiasis).
- congenital m., m. congenitum congenital dilation and hypertrophy of the colon due to absence (aganglionosis) or marked reduction (hypoganglionosis) in the number of ganglion cells of the myenteric plexus of the rectum and a varying but continuous length of gut above the rectum; also seen in dogs. SYN: Hirschsprung disease.
- idiopathic m. an acquired m., found in children and adults, without distal obstruction or absence of ganglion cells; the muscle of the dilated colon is thin.
- toxic m. acute nonobstructive dilation of the colon, seen in fulminating ulcerative colitis and Crohn disease.

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mega·co·lon 'meg-ə-.kō-lən n extreme dilation of the colon that may be congenital or acquired see HIRSCHSPRUNG'S DISEASE

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n.
dilatation, and sometimes lengthening, of the colon. It is caused by obstruction of the colon, Hirschsprung's disease, or longstanding constipation, or it may occur as a complication of ulcerative colitis (toxic megacolon).

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mega·co·lon (meg″ə-koґlən) an abnormally large or dilated colon; the condition may be congenital or acquired, acute or chronic. Called also macrocolon.

Medical dictionary. 2011.

Look at other dictionaries:

  • Megacolon — Classification and external resources ICD 10 K59.3 ICD 9 564.7 …   Wikipedia

  • megacolon — MEGACOLÓN s.n. Dilatare pronunţată a intestinului gros, dobândită sau congenitală. – Din fr. mégacôlon. Trimis de LauraGellner, 27.05.2004. Sursa: DEX 98  megacolón s. n. Trimis de siveco, 10.08.2004. Sursa: Dicţionar ortografic  MEGACOLÓN m.… …   Dicționar Român

  • Mégacôlon — toxique Le mégacôlon toxique (megacolon toxicum) est une complication possiblement fatale d autres conditions intestinales. Il est caractérisé par un côlon très dilaté (mégacôlon), accompagné d une dilatation de l abdomen (gonflement), et parfois …   Wikipédia en Français

  • megacolon — m. anat. patol. Tamaño anormalmente grande del colon o dilatación de una parte más o menos extensa del colon. Cursa con estreñimiento y puede ser congénita o adquirida. Medical Dictionary. 2011. megacolon …   Diccionario médico

  • mégacôlon — [ megakolɔ̃ ] n. m. • 1901; de méga et côlon ♦ Méd. Dilatation anormale du gros intestin, accompagnée d un épaississement de la paroi. ● mégacôlon nom masculin Dilatation importante et permanente d un segment du côlon, parfois congénitale,… …   Encyclopédie Universelle

  • megacolon — ▪ pathology       massive enlargement and dilation of the large intestine (colon). The two main types of the syndrome are congenital megacolon, or Hirschsprung disease, and acquired megacolon. In congenital megacolon, the lowermost portion of the …   Universalium

  • Megacolon — Klassifikation nach ICD 10 Q43.1 Hirschsprung Krankheit Aganglionose Megacolon congenitum (aganglionär) B57.3 Chagas Krankheit (chronisch) mit Beteiligung des Verdauungssystems …   Deutsch Wikipedia

  • megacolon — n. dilatation, and sometimes lengthening, of the colon. It is caused by obstruction of the colon, Hirschsprung s disease, or longstanding constipation, or it may occur as a complication of ulcerative colitis (toxic megacolon) …   The new mediacal dictionary

  • Megacolon — didelė storoji žarna statusas T sritis gyvūnų raida, augimas, ontogenezė, embriologija atitikmenys: lot. Megacolon ryšiai: platesnis terminas – virškinimo kanalo defektai siauresnis terminas – įgimta stoka parasimpatinių mazgų ląstelių …   Veterinarinės anatomijos, histologijos ir embriologijos terminai

  • Megacolon — didelė storoji žarna statusas T sritis embriologija atitikmenys: lot. Megacolon ryšiai: platesnis terminas – virškinimo kanalo ydos siauresnis terminas – įgimta stoka parasimpatinių mazgų ląstelių …   Medicininės histologijos ir embriologijos vardynas