title: [Reversible functional disorders of the intestinal tract caused by abdominal radiotherapy].
abstract: In 20 patients with malignancies receiving abdominal radiotherapy, tests for disturbed intestinal functions were performed at the beginning and at the end of the therapy and after 6 to 12 month following radiation. Four noninvasive tests were performed: 75Se-homotaurocholate (75SeHCAT) test for estimation of bile acid malabsorption; Schillings test for quantification of vitamin B12 absorption; H2-breath analysis before and after a test meal containing lactose as a parameter of lactose malabsorption; and 51Cr-EDTA test for estimation of intestinal permeability. Both bile acid and vitamin B12 absorption decreased significantly towards the end of abdominal radiotherapy in more than 50% of patients. Only one patient developed lactose malabsorption. After 6 to 12 month, these abnormalities had completely disappeared. In contrast, small intestinal permeability did not increase during radiotherapy but was significantly elevated 6 to 12 month following treatment as the only indication of chronic injury of small intestinal mucosa. During radiotherapy, a significant correlation existed between the severity of diarrhea and the degree of bile acid malabsorption.
mesh_terms: D003967:Diarrhea / Q000209:etiology; D004407:Dysgerminoma / Q000532:radiotherapy; D005500:Follow-Up Studies; D006689:Hodgkin Disease / Q000532:radiotherapy; D006801:Humans; D007410:Intestinal Diseases / Q000209:etiology; D007422:Intestines / Q000528:radiation effects*; D008228:Lymphoma, Non-Hodgkin / Q000532:radiotherapy; D008286:Malabsorption Syndromes / Q000209:etiology; D008297:Male; D009369:Neoplasms / Q000532:radiotherapy*; D011832:Radiation Injuries / Q000209:etiology*; D013736:Testicular Neoplasms / Q000532:radiotherapy
vernacular_title: Reversible Funktionsstörungen des Intestinaltraktes durch abdominelle Strahlentherapie.