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. 1970 Apr;45(240):173–177. doi: 10.1136/adc.45.240.173

Congenital Lactose Malabsorption

B Levin, J M Abraham, E Ann Burgess, Patricia G Wallis
PMCID: PMC2020274  PMID: 5419986

Abstract

A breastfed female infant is described who developed from the third day of life a severe watery diarrhoea, with weight loss. This ceased when lactose was omitted from the feeds and returned when it was resumed. Intolerance to this carbohydrate was confirmed by a lactose tolerance test which showed inability to hydrolyse the disaccharide. Absorption of glucose and sucrose was normal. No other cause for the diarrhoea was established. Congenital lactose malabsorption (alactasia) was confirmed by examination of the duodenal mucosa. The lactase activity was virtually absent, and the maltase, isomaltase, and sucrase activities were normal. The differential diagnosis of the congenital and acquired forms is discussed, and the importance of intestinal mucosal enzyme assays for final confirmation of the diagnosis is stressed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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