Periosteal chondroma.
D000328:Adult; D001859:Bone Neoplasms / Q000000981:diagnostic imaging*; D002812:Chondroma / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D010521:Periosteum / Q000000981:diagnostic imaging*; D013977:Tibia / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed