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Keratoacanthoma Recurring in a Surgical Scar. Presented by Dr. Anthony Cipollaro.
Duration 11 weeks. The patient, a 45-year-old white female, first noticed a lesion on the left cheek 11 weeks ago. It grew rapidly and was treated by incision and drainage and systemic antibiotics by a local physician. Following this, the lesion rapidly grew to the size of a quarter. She was sent to a plastic surgeon who performed two biopsies which were separately interpreted by two competent dermatologists as keratoacanthoma. The lesion continued to grow rapidly to the size of a half dollar. Four weeks ago, the plastic surgeon did a complete excision and sliding flap graft. Within one week the present lesion began to appear along the lower half of the excision line and has been rapidly growing since that time. Two smaller areas have appeared along the middle and upper half of the excision line.
MANHATTAN DERMATOLOGICAL SOCIETY. Arch Dermatol. 1964;90(4):438–440. doi:10.1001/archderm.1964.01600040066015