Introduction Chondroblastoma is a rare benign cartilaginous neoplasm that accounts for approximately 1% of all bone tumors and characteristically arises in the epiphysis of a long bone, particularly the humerus, femur...Introduction Chondroblastoma is a rare benign cartilaginous neoplasm that accounts for approximately 1% of all bone tumors and characteristically arises in the epiphysis of a long bone, particularly the humerus, femur and tibia. Chondroblastoma can affect people of all ages. However, it is most common in children and young adults between the age of 10 and 20 years. Occasionally it can be followed by a more aggressive course invading the joint spaces, adjacent bones and rarely resuiting in metastases. It is defined as a lytic bone lesion with a predilection for the epiphyseal region of long bones in skeletally immature individuals, although 50% of the tumors also involve the metaphysis. However, purely metaphyseal and diaphyseal tumors are exceedingly rare. In fact, the only diaphyseal chondroblastoma we found in the literature was located in a metacarpal bone and the distal femor. We describe a Chondroblastoma arising from the diaphysis of the tibia, which, to the best of our knowledge, is the first diaphyseal chondroblastoma of the tibia reported in the world literature.展开更多
文摘Introduction Chondroblastoma is a rare benign cartilaginous neoplasm that accounts for approximately 1% of all bone tumors and characteristically arises in the epiphysis of a long bone, particularly the humerus, femur and tibia. Chondroblastoma can affect people of all ages. However, it is most common in children and young adults between the age of 10 and 20 years. Occasionally it can be followed by a more aggressive course invading the joint spaces, adjacent bones and rarely resuiting in metastases. It is defined as a lytic bone lesion with a predilection for the epiphyseal region of long bones in skeletally immature individuals, although 50% of the tumors also involve the metaphysis. However, purely metaphyseal and diaphyseal tumors are exceedingly rare. In fact, the only diaphyseal chondroblastoma we found in the literature was located in a metacarpal bone and the distal femor. We describe a Chondroblastoma arising from the diaphysis of the tibia, which, to the best of our knowledge, is the first diaphyseal chondroblastoma of the tibia reported in the world literature.
