The secondary hypertrophic osteoarthropathy is a systemic change that affects the bones, joints and soft tissues and is secondary to any intrathoracic pathology. It is a syndrome of chronic proliferative periostitis of the long bones, clubbing of the fingers of the hands, feet or both, and olyarthritis or polyarthritis. We report one case of hypertrophic osteoarthropathy in a patient with lung mass with bulky diagnostic anatomopathological, adenocarcinoma.