Infantile hypertrophic pyloric stenosis and cow's milk intolerance.

Two cases of infantile hypertrophic pyloric stenosis in infants who were exclusively breastfed are reported. In both cases dietetic management succeeded in avoiding surgery. In one case human milk was substituted with casein hydrolysate formula, while in the other cow's milk was excluded from the diet of the mother. A possible casual relationship between cow's milk intolerance and infantile hypertrophic pyloric stenosis is discussed.