Ollier disease is a rare genetic disorder leading to benign skeletal tumors or enchondromas that usually develop in the cartilage at the end of growing bones. Most people with the disease begin developing these tumors in early childhood, and the growth ends when the bones finish growing in early adulthood. The result of these enchondromas is bone deformities that can affect physical ability.
Cartilage is composed of connective tissue and, in embryos and children, provides a model for future bone growth. Through adolescence, thin plates of cartilage remain at the ends of growing bones until early adulthood, when the plates ossify, turning to bone.
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