Migrating root tip.
D000328:Adult; D006257:Head / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D009666:Nose / Q000473:pathology; D011861:Radiography, Dental; D014071:Tooth Abnormalities / Q000000981:diagnostic imaging* / Q000473:pathology; D014092:Tooth Root / Q000000981:diagnostic imaging* / Q000473:pathology