malabsorption


malabsorption
Imperfect, inadequate, or otherwise disordered gastrointestinal absorption.
- congenital selective glucose and galactose m. an inherited disorder in which d-glucose and d-galactose accumulate in the intestinal lumen and exert an osmotic effect; leads to abdominal fullness, abdominal pain, and diarrhea.
- enterocyte cobalamin m. an inherited disorder of impaired transintestinal transport of cobalamin; symptoms are similar to a vitamin B12 deficiency.
- fructose m. an inborn error in metabolism in which oral d-fructose is incompletely absorbed; results in abdominal symptoms and diarrhea.
- hereditary folate m. an inherited disorder in which there is defective transport of folates in intestine and choroid plexus, results in megaloblastic anemia and neurologic abnormalities.

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mal·ab·sorp·tion .mal-əb-'sȯrp-shən, -'zȯrp- n faulty absorption of nutrient materials from the alimentary canal called also malassimilation
mal·ab·sorp·tive -tiv adj

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n.
a state in which absorption of one or more substances by the small intestine is reduced. It most commonly affects fat (causing steatorrhoea), some vitamins (such as B12, folic acid, vitamin D, and vitamin K), electrolyte (such as calcium, potassium), iron, and amino acids. Symptoms (depending on the substances involved) include weight loss, diarrhoea, anaemia, swelling (oedema), and vitamin deficiencies. The commonest causes are coeliac disease, pancreatitis, cystic fibrosis, blind loop syndrome, or surgical removal of a length of small intestine.

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mal·ab·sorp·tion (mal″əb-sorpґshən) impaired intestinal absorption of nutrients; see also malabsorption syndrome, under syndrome. Sometimes malabsorption is artificially induced as a treatment of morbid obesity, such as with jejunoileal bypass.

Medical dictionary. 2011.

Look at other dictionaries:

  • Malabsorption — Classification and external resources Whipple s disease: Alcian blue with apparently eosin counterstain enlarged villus with many macrophages ICD 10 …   Wikipedia

  • malabsorption — [ malapsɔrpsjɔ̃ ] n. f. • av. 1969; de 2. mal et absorption ♦ Méd. Trouble du processus d absorption des aliments à travers la muqueuse intestinale. ● malabsorption nom féminin Trouble du processus d absorption des aliments à travers la muqueuse… …   Encyclopédie Universelle

  • malabsorption — 1879, from MAL (Cf. mal ) + ABSORPTION (Cf. absorption) …   Etymology dictionary

  • malabsorption — [mal΄əb sôrp′shən, mäl΄əzôrp′shən] n. the poor absorption of nutrients by the alimentary canal …   English World dictionary

  • Malabsorption — Unter Malassimilation von lateinisch malus (schlecht, schädlich, böse) und assimilare (angleichen, ähnlich machen) wird eine beeinträchtigte, das heißt verminderte Nährstoffausnutzung aufgrund unterschiedlichster Störungen im Verdauungstrakt… …   Deutsch Wikipedia

  • Malabsorption — Syndrome de malabsorption La malabsorption de nutriments du fait d une maladie de l intestin grêle est rare, mais de diagnostic aisé. La malabsorption est définie par l incapacité du tube digestif à absorber l ensemble des substances alimentaires …   Wikipédia en Français

  • Malabsorption — Mal|ab|sorptio̱n [aus gleichbed. engl. malabsorption (eigtl. = schlechte Absorption)] w; , en: Störung der Resorption von Nahrungsstoffen im Darm, vor allem bei Vitaminmangelzuständen …   Das Wörterbuch medizinischer Fachausdrücke

  • Malabsorption — Mal|ab|sorp|ti|on die; <aus gleichbed. engl. malabsorption zu male »schlecht , bös(e) «, dies aus lat. malus (vgl. ↑Malus) u. ↑Absorption> Störung der Resorption von Nahrungsstoffen im Darm, vor allem bei Vitaminmangelzuständen (Med.) …   Das große Fremdwörterbuch

  • malabsorption — noun Date: circa 1929 faulty absorption especially of nutrient materials from the gastrointestinal tract …   New Collegiate Dictionary

  • malabsorption — /mal euhb sawrp sheuhn, zawrp /, n. Pathol. faulty absorption of nutritive material from the intestine. [1930 35; MAL + ABSORPTION] * * * …   Universalium