Polishing over yellow nails.
D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D008297:Male; D009260:Nail Diseases / Q000209:etiology* / Q000503:physiopathology; D009262:Nails / Q000503:physiopathology; D010859:Pigmentation Disorders / Q000209:etiology*; D010996:Pleural Effusion / Q000000981:diagnostic imaging*; D011859:Radiography; D013577:Syndrome