Gibbons CL, Khwaja HA, Cole AS, et al: Giant-cell tumour of the tendon sheath in the foot and ankle.J Bone Joint Surg Br 84::1000. ,2002. .
Vasconez HC, Nisanci M, Lee EY: Giant cell tumour of the flexor tendon sheath of the foot.J Plast Reconstr Aesthet Surg 61::815. ,2008. .
Lo EP, Ketterer D: Giant cell tumor of tendon sheath in the toe.JAPMA 90::270. ,2000. .
Iyer V, Kapila K, Verma K: Fine-needle aspiration cytology of giant cell tumor of tendon sheath.Diagn Cytopathol 29::105. ,2003. .
Weiss SW, Goldblum JR: “Benign Tumors and Tumor-Like Lesions of Synovial Tissues,” in Enzinger and Weiss’s Soft Tissue Tumors, p 1037, Mosby, St. Louis,2001. .
Giant cell tumor of tendon sheath is infrequently documented in the foot and even less near the ankle. This case report involves such a tumor of the flexor hallucis longus tendon presenting at the posterior ankle. Diagnosis was aided by magnetic resonance imaging, and treatment consisted of complete surgical excision. Pathologic examination verified the diagnosis of giant cell tumor of tendon sheath, and follow-up magnetic resonance imaging revealed no remnants or recurrence of tumor 1 year after surgery. (J Am Podiatr Med Assoc 101(2): 187–189, 2011)