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Summary Five patients with primary antibody deficiency were investigated because of intermittent but persistent diarrhoea of several years duration despite immunoglobulin replacement therapy. We found no evidence of Giardia lambia or other intestinal pathogens to explain their gastrointestinal symptoms. All five had definite radiological evidence of small bowel Crohn's disease and three had histological specimens available with abnormalities consistent with Crohn's disease. One patient had a non-caseating granuloma in an oral ulcer. A second patient with stricturing disease in the small bowel had a mucosal inflammatory infiltrate with non-caseating granulomas. A third had transmural inflammation but no granulomas. All five patents were diagnosed as having Crohn's disease and have responded symptomatically to steroid therapy.

Over the last 10 years, the Nutrition Unit at Hope Hospital has trained and looked after 76 patients on home parenteral nutrition for a total of 100 patient years. Although 40 per cent of patients have required home parenteral nutrition for 6 months or less one patient has been on treatment for 7 years. The quality of life measured on a 4 point scale was good for the majority of patients. Sepsis and superior vena caval thrombosis are the main problems encountered. Overall mortality rate was 18 per cent and the sepsis rate was 0·14 episodes per patient per year. Home parenteral nutrition is an effective and safe treatment of intestinal failure.