Embedded tooth: unique mimicker of keratoacanthoma

A 58-year-old woman presented to the Department of Dermatology with a 30-day history of a moderately painful enlarging nodule on her upper cutaneous lip. Two weeks prior to presentation, she fell on the sidewalk leading to injuries of the oral mucosa, right temple, and knees. She also noticed that the upper lateral incisor, a 3-year-old implant, was missing and had it replaced by a dentist. Physical examination revealed a 1.3 cm erythematous crusty nodule on the upper cutaneous lip and vermillion border resembling a keratoacanthoma-type squamous cell carcinoma (Fig 1a).
Source: Journal of Oral and Maxillofacial Surgery - Category: ENT & OMF Authors: Source Type: research