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what is Giant cell tumor ?

Giant cell tumor accounts for 5 to 9 percent of all primary bony tumors and may be the most common bone tumor in the young adults aged 25 to 40. Giant cell tumor is are found more commonly in women than men, and occur most often during the third decade (1). Giant cell tumors are usually found in the long bones, most often the distal femur, proximal tibia, and distal radius. Giant cell tumor is a one of the most common primary bone lesions in the distal phalanx. Whether that tumor arises in the epiphysis or distal metaphysis is a matter of controversy, but giant cell tumors only occur after the epiphyseal plates have closed and a diagnosisof GCT in a patient with open growth plates should be questioned.