RT Journal A1 Long DE, Long FR, Seguin J T1 RAdiological case of the month JF Archives of Pediatrics & Adolescent Medicine JO Archives of Pediatrics & Adolescent Medicine YR 1999 FD November 1 VO 153 IS 11 SP 1195 OP 1196 DO 10.1001/archpedi.153.11.1195 UL http://dx.doi.org/10.1001/archpedi.153.11.1195 AB The infant was born at 31 weeks' gestational age weighing 1213 g. He required a short course of respiratory assistance, and an umbilical artery catheter was used for the first 5 days. The hospital course was complicated on day 5 by Staphylococcus aureus sepsis and osteomyelitis of the left femur, ischium, and tibia. Purulent fluid was present at the umbilical stump. An echocardiogram showed no abnormalities. Further imaging evaluation included a contrast-enhanced computed tomographic scan (Figure 2) and a magnetic resonance image of the thorax (Figure 3).