title: Subungual epidermal cyst.
abstract: A patient developed a painful subungual lesion which was an epidermal cyst on biopsy. The incidence and pathogenesis of subungual epidermal cysts are reviewed. This usually asymptomatic tumor should be considered in the differential diagnosis of subungual lesions.
mesh_terms: D000328:Adult; D004814:Epidermal Cyst / Q000175:diagnosis* / Q000209:etiology; D005383:Finger Injuries / Q000150:complications; D006801:Humans; D008297:Male; D009260:Nail Diseases / Q000175:diagnosis* / Q000209:etiology