Upper Lobe Lung Mass Found in 76-Year-Old Man

Poll

A 76-year-old man is found to have a right upper lobe mass. After further evaluation, a biopsy is performed. What is your diagnosis?

A 76-year-old man is found to have a right upper lobe mass. According to the histopathology image below, what is your diagnosis?

What is your diagnosis?

A. Papillary carcinoma of the lung
B. Pulmonary blastoma
C. Squamous cell carcinoma
D. Adenosquamous carcinoma
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