<unk>  is identified by the presence of both multiple enchondromas and osteochondromas in the patient, although other less characteristic symptoms are often associated with the disease. The symptoms usually become apparent in the first 10 years of life and disappear later in life. The symptoms of<unk>  are seen as follows: Enchondromas Enchondromas are benign tumors present on the inside of bones. In<unk> , enchondromas involves the iliac crests and metaphyses of long bones, often the proximal femur. Usually, these tumors are painless; however, when present in the hands or feet, or in multiple lesions, as typically seen, bone deformity can occur. Osteochondromas Osteochondromas are benign tumors located on the surface of bone near growth plates. These tumors also often in the hands and feet, primarily affecting the digits of fingers and toes. These tumors tend to subside after 10-20 years of life. These tumors can become painful if they pressure sensitive tissue or nerves.<unk>  is differentiated from hereditary multiple osteochondromas by the location of the location of Osteochondromas tumors as well as the lack of bone-shortening. Abnormality of epiphysis morphology The epiphysis is the rounded end part of bone. The structure of the epiphysis can be abnormal in<unk> . Abnormality of the metaphysis The metaphysis is wide portion of a long bone, and also has abnormal structure in the disease. Avascular necrosis Avascular necrosis is the death of bone due to a decreased blood supply. Bone pain People with<unk>  often experience bone pain due to abnormal bone shapes. Cranial nerve paralysis Cranial nerve paralysis can affect the functions associated with the cranial nerve.
Metachondromatosis
Verruciform xanthoma
Pseudoxanthoma elasticum
Warty dyskeratoma
Boomerang dysplasia
Phakomatosis
Neuroma cutis
Diffuse infantile fibromatosis