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Picture of the Month Quiz

Image of figure 1

Figure.

A female infant was born by vaginal delivery at 39 weeks' gestation. The Apgar score was 7 at 1 minute and 9 at 5 minutes. Birth weight was 2630 g. She developed a mild, self-resolving tachypnea with normal oxygen saturation values. Radiography showed a normal right lung and an opacified left hemithorax (Figure). No additional abnormalities were found.

For a complete discussion of this month's case, read next month's JAMA Pediatrics. For a complete discussion of last month's case, read this month's Picture of the Month—Quiz Case.