Actinic keratoacanthoma.
D000328:Adult; D000368:Aged; D001706:Biopsy; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis; D002467:Cell Nucleus; D002999:Clone Cells; D004848:Epithelium / Q000473:pathology; D005260:Female; D006801:Humans; D007249:Inflammation / Q000473:pathology; D007636:Keratoacanthoma / Q000175:diagnosis / Q000209:etiology / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D009374:Neoplasms, Experimental / Q000473:pathology; D011230:Precancerous Conditions / Q000473:pathology; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000209:etiology / Q000473:pathology*; D013472:Sunlight