Acquired periungual fibroma.
D000328:Adult; D005350:Fibroma / Q000209:etiology* / Q000473:pathology; D006801:Humans; D008297:Male; D009260:Nail Diseases / Q000209:etiology; D009262:Nails / Q000293:injuries; D012878:Skin Neoplasms / Q000209:etiology* / Q000473:pathology