Giant Cell Tumor of Clavicle in an Elderly: Rare Presentation of a Common Tumor with Review of Literature; 1980-2020.

Giant cell tumor (GCT), also known as osteoclastoma, is a locally aggressive benign tumor arising in the epiphysis of bone. It accounts for 3%-8% of all bone tumors. About 75%-90% of GCTs occur in long tubular bones with more than 50% arising in the distal femur and proximal tibia. Flat bone involvements such as ribs, skull, patella, sternum, and clavicle are rare. Sixty-seventy percent of patients with GCT are between 20 and 40 years of age, rarely affecting too young or too old. We present here an unusual case of GCT of the clavicle in a 62-year-old female.