Metaphyso-Diaphyseal Chondroblastoma of the Humerus: About Two Cases

Chondroblastoma accounts for less than 2% of all bone tumors, it is a tumor of benign cartilage origin, it is typically located at the level of the epiphysis or process of a long bone. Most often located in the proximal humerus, the distal femur, the proximal tibia, it more rarely affects the tarsal bones or the pelvis. We report 2 cases of young patients (aged 14 years and 15 years) with metaphysodiaphyseal chondroblastoma of the right humerus which was revealed by painful shoulder swelling and joint limitation. Our goal is to discuss the diagnostic difficulties and evolutionary aspects of this rare tumor as well as its treatment.