The calvarial "doughnut lesion": a previously undescribed entity.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001706:Biopsy; D001847:Bone Diseases / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008875:Middle Aged; D011859:Radiography; D012598:Sclerosis; D012886:Skull / Q000000981:diagnostic imaging* / Q000473:pathology