"Bull's eye" type of intervertebral disc calcification.
D002114:Calcinosis / Q000000981:diagnostic imaging*; D002648:Child; D006801:Humans; D007403:Intervertebral Disc / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D011859:Radiography; D013122:Spinal Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D013997:Time Factors