title: Case report 695: Cementifying fibroma of the proximal end of the tibia.
abstract: A case of a cementifying fibroma in the proximal end of the tibia in a 31-year-old woman is presented. The lesion was expanding but well-defined with amorphous central calcification. The unique, calcified, cementum-like particles in a fibrous stroma have been reported in only four previous cases in long bones. The histological and radiographic differences between a cementifying fibroma, bone cysts with cementum, and a true cementoma are discussed. The radiological differential diagnosis of fibrous dysplasia, giant cell tumor, and low grade central osteosarcoma was considered.
authors.affiliation: Section of Orthopedic Surgery, University of Kansas Medical Center, Kansas City 66103.
authors.forename: D L
authors.initials: DL
authors.lastname: Black
authors.forename: A A
authors.initials: AA
authors.lastname: De Smet
authors.forename: J R
authors.initials: JR
authors.lastname: Neff
authors.forename: P
authors.initials: P
authors.lastname: Bhatia
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D005350:Fibroma / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D011859:Radiography; D011877:Radionuclide Imaging; D013977:Tibia / Q000000981:diagnostic imaging / Q000473:pathology