<unk>  is an osteochondrosis of the capitellum of the elbow.<unk>  is primarily seen in boys between the ages of five and ten years old.<unk>  is often caused by excessive throwing due to valgus stress. The disease causes pain and stiffness in the affected elbow and may limit extension; the affected elbow is usually on the dominant arm the child uses. The disease may be associated with pitching and athletic activity. On radiographs, the capitellum may appear irregular with areas of radiolucency. Treatment is symptomatic, with a good prognosis. Treatment is minimal and includes restricting athletic activity to allow for the elbow to heal and for pain to be relieved. The disease is named after the Danish radiologist Hans Jessen<unk>  (1871–1930).
Panner disease
Mondor's disease
Ollier disease
Premature thelarche
Minor's disease
Haff disease
Chandler's disease
Adiposogenital dystrophy