CB is a 1-year-old boy who was noted by his parents to have some bluish swelling of the left upper eyelid shortly after birth. They attributed it to birth trauma but became alarmed when the swelling increased dramatically over 2 weeks. They observed that the lid became more swollen and reddish when the baby cried vigorously. The pediatrician, who obtained a CT scan that same day that was interpreted as showing diffuse orbital swelling, saw the child. A mass such as rhabdomyosarcoma could not be ruled out. The patient was referred to a pediatric ophthalmologist with the operating room on call for a possible emergency biopsy that evening.
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