This 11-week-old female infant was admitted for the evaluation of progressive anemia and failure to thrive. The infant was the product of a normal pregnancy and a spontaneous full-term delivery. She weighed 3.5 kg at birth, and at 3 days of age had a hemoglobin (Hb) value of 15.2 g/dL and a hematocrit (Hct) value of 44%. She was breast-fed, and at 2 weeks of age weighed 3.9 kg. At 7 weeks of age, she weighed 3.9 kg, with an Hb value of 11.7 g/dL and an Hct value of 34%. Urinalysis showed 3 + protein with six to eight red blood cells per high-power field. She subsequently exhibited poor weight gain, and at 10 weeks of age had an Hb value of 7 g/dL and an Hct value of 21%. During the week prior to admission, a marked decrease in activity was noted, as well as poor feeding. Urine output
Rosen PR, Glasier CM, Knight DR, Collins TL, Weiland FL, Young LW. Radiological Case of the Month. Am J Dis Child. 1985;139(9):923–924. doi:10.1001/archpedi.1985.02140110077034
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