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Lack of Lactobezoars in Infants Given Predominantly Whey Protein Formulas

Richard L. Schreiner, MD; Mary Sue Brady, RD, MS; Judith A. Ernst, RD, MS; James A. Lemons, MD
Am J Dis Child. 1982;136(5):437-439. doi:10.1001/archpedi.1982.03970410055012.
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• Lactobezoars have been reported with increasing frequency in low-birth-weight infants. The etiology of a lactobezoar is not well understood and is probably multifactorial. During a 2½-year period, 29 of 442 infants weighing less than 2,000 g who were fed casein-predominant formulas had lactobezoars. During the subsequent 14-month period, 223 infants weighing less than 2,000 g were fed a whey-predominant formula, and none had lactobezoars. There have been no reports of lactobezoars in infants fed human milk or whey-predominant formulas. It would appear that the presence of casein as the predominant protein is necessary for the development of a lactobezoar.

(Am J Dis Child 1982;136:437-439)

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