Jeffrey Pennington, MD

March 01, 2007

A 15-day-old boy is brought for evaluation after his mother noted a "lump" in his left breast that morning. There is no history of illness or trauma. The infant's appetite and activities are normal, and he has no constitutional symptoms. He was delivered vaginally at full term and did not require a prolonged nursery stay or antibiotic therapy. Results of standard maternal screens were negative.