Benign metastasizing giant-cell tumor of the hand. Report of a case and review of the literature.

Benign metastasizing giant-cell tumor of the hands is an extremely infrequent neoplasm. A 37-year-old man with one of these neoplasms in the second phalanx of his fifth left finger was examined. Microscopically, the tumor was a conventional Grade 1 giant-cell tumor that metastasized to the lung. Although this tumor is most infrequent, its metastatic potential indicates inclusion of benign metastasizing giant-cell tumor in the differential diagnosis with other giant-cell neoplasms of the hands.