A 70-year-old man has a 3-month history of weakness and a 10-kg (22-lb) weight loss. He has smoked 2 packs of cigarettes daily for 50 years An x-ray of the chest shows a 4-em lesion in the right upper lobe. Serum calcium concentration is 13.5 mg/dl. There are no bone metastases. A malignant lesion arising in a segmental bronchus is seen during lobectomy Which of the following is the most likely diagnosis?
A) Adenocarcinoma
B) Carcinoid
C) Leiomyosarcoma
D) Small cell carcinoma
E) Squamous cell carcinoma
A 70-year-old man has a 3-month history of weakness and a 10-kg (22-lb) weight loss. He has smoked 2 packs of cigarettes
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