PEDIATRICS Vol. 65 No. 1 January 1980, pp. 161-163
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Abetalipoproteinemia Presenting as Severe Vitamin K Deficiency

Fernan M. Caballero MD1 and George R. Buchanan MD1

1 Department of Pediatrics, University of Texas Health Science, Center at Dallas Dallas

Vitamin K deficiency has occasionally been observed in infants after the immediate neonatal period when one or more of the following features is present: diet consisting entirely of breast milk, failure to receive prophylactic vitamin K shortly after birth, therapy with broad-spectrum antibiotics, or chronic diarrhea accompanying malabsorption due to cystic fibrosis or to various acquired causes.1-7 In this report we describe for the first time an infant with the uncommon autosomal recessive disorder abetalipoproteinemia whose major presenting manifestation in early infancy was hemorrhage due to vitamin K deficiency.

CASE REPORT

A 6-week-old baby was brought in for evaluation because of a two- to three-week history of easy bruising.