2025-11-272025-11-27http://hdl.handle.net/2263/106698Clinical history : A 43-year-old white man with opacity of the upper lobe of the right lung.Acanthosis nigricans and severe hypertrophic pulmonary osteoarthropathy were also noted.Autopsy findings : 1. Bronchial carcinoma in right upper lobe with obstructive lung syndrome and bronchiectasis.2. Centrilobar emphysema.3. Chronic bronchitis.4. Hypertrophic pulmonary osteoarthropathy.5. Acanthosis nigricans.Diagnosis: 1. Bronchial carcinoma in upper lobe with obstructive lung syndrome.2. Hypertrophic pulmonary osteoarthropathy