Giant Cell Tumor of the Peroneus Brevis Tendon Sheath.
BACKGROUND
Giant cell tumor of the tendon sheath is most commonly found in the flexor aspect of hand and wrist and is rare in the foot and ankle.


METHODS
A 49-year-old lady noticed a right lateral foot mass for 10 years. Magnetic resonance imaging suggested that the mass is originated from the peroneal tendons. The mass was excised and intra-operative findings showed that the tumor came from the peroneus brevis tendon sheath. Histological study confirmed the diagnosis of giant cell tumor.


CONCLUSIONS
Giant cell tumor, although rare, should be one of the differential diagnoses of tendon sheath tumor of the foot and ankle.
Department of Orthopaedics and Traumatology, North District Hospital, 9 Po Kin Road, Shung Shui. Hong Kong.
Li
L
Ch
Department of Orthopaedics and Traumatology, North District Hospital, 9 Po Kin Road, Shung Shui. Hong Kong.
Lui
L
Th
foot; giant cell tumor; peroneal tendons; peroneal tubercle