Submandibular neck mass in a newborn.

A deep neck abscess is uncommon in the newborn period. In this case, we noted a clindamycin-sensitive methicillin-resistant Staphylococcus aureus infection characterized as a deep neck abscess in an 8-day-old boy. He was admitted to the pediatric intensive care unit with a progressively enlarging indurated mass below the mandible. Imaging confirmed the mass as a submandibular abscess. The patient received antibiotics in addition to incision and drainage, with resolution of the abscess.