This bone tumor and the femur from which it originated were amputated from a 14-year-old boy. Histologically, the tumor was composed of malignant cells producing osteoid. Radiologically the tumor was considered to be malignant
What is the most appropriate diagnosis?
A. osteoblastoma
B. osteosarcoma
C. osteoid osteoma
D. giant cell tumor of bones
E. chondrosarcoma
B
On the basis of the size of this tumor and the fact that it is of irregular shape and grows irregularly out from the bone, destroying the cortical bone and elevating the periosteum, it can be concluded that the tumor is malignant. Malignant bone-producing tumors involving the metaphysis of long bones in peripubertal young persons are classified as osteosarcomas.
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Indicate whether the statement is true or false
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