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Treatment of Giant Cell Tumor of Soft Tissue Disguised as Giant Cell Tumor of the Bone Involving the Distal and Proximal Phalanges of the Great Toe

A Case Report

Ronika Sethi DPM, Grace Tsai DPM, Wei-Jei Liao DPM, and Lawrence Horl DPM
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Giant cell tumors are benign tumors that are locally aggressive and rare in the foot. Giant cell tumors involving bone in the foot have an incidence of 1.2% to 2.8%, whereas giant cell tumors of the tendon sheath constitute 3% to 5% of all giant cell tumors in the foot and ankle. We present a case of giant cell tumor of the soft tissue disguised as a giant cell tumor of bone in a healthy 29-year-old male patient. Through radiographic and magnetic resonance imaging evaluation, it was determined that this patient had a bone tumor invading the distal and proximal phalanges of his left great toe with the involvement of soft tissue. With the use of the evidence-based medicine and patient expectation, the decision was made to amputate the digit. To much surprise, when the histopathologic results were reviewed, it was determined that the excised lesion was consistent with giant cell tumor of soft tissue that did not involve the bone.

Mount Sinai South Nassau, One Healthy Way, Oceanside, NY.

Corresponding author: Ronika Sethi, DPM, Mount Sinai South Nassau, One Healthy Way, Oceanside NY 11572. (E-mail: ronikadpm@gmail.com)