Infantile myofibromatosis: A diagnostic conundrum

A 2-day-old boy was referred to dermatology with a history of skin lesions present since birth. He was born at 39+6 weeks by cesarean section owing to failure to progress to a primiparous mother with gestational diabetes. On examination, he had 6 firm, tumid, red-violaceous nodules on the body. The largest was on the left side of the neck which had reportedly grown since birth; ultrasound did not reveal any Doppler flow. In addition, similar lesions were noted on the torso, with smaller nodules on the groin, lower abdomen and calf.