Medical Definition of hypertrophic osteoarthropathy
: a hypertrophic condition that is marked especially by clubbing of the fingers and toes, painful swollen joints, and periostitis and subperiosteal bone formation chiefly affecting the long bones (as the radius or fibula) and that usually occurs secondary to another disease (as bronchiectasis, bronchogenic carcinoma, mesothelioma, or cirrhosis)
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