Parosteal Osteosarcoma of the Proximal Phalanx of a Finger

Osteogenic sarcoma of the hand is very rare and fewer than 50 cases have been reported. There are only 2 previously reported cases of parosteal osteosarcoma involving the phalanges. We report a primary parosteal osteosarcoma involving the proximal phalanx of the right middle finger in a 20-year-old woman, which was managed by ray amputation. There was no evidence of local recurrence or systemic metastasis in the postoperative follow-up period of 2 years. Copyright (C) 2020 by the American Society for Surgery of the Hand. All rights reserved.