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Congenital and acquired syphilis of bone: pathologic fracture with hyperplastic callus. A description of two cases and a review of the literature.

The authors describe two cases of syphilis of bone with multiple pathologic fractures. Healing of the fractures occurred over a normal period of time, with the production of hyperplastic callus. Differential diagnosis with tumorous and pseudotumorous lesions is possible based on clinical data and a history of the patient, as well as specific laboratory tests for syphilis; occasionally, biopsy is required.