A 63-Year-Old Man Presents With Cough & Shortness of Breath

August 4, 2015

A 63-year-old man presents with cough and shortness of breath. After further evaluation, a mass in the right upper lobe is found and a biopsy is performed. What is your diagnosis?

A 63-year-old man presents with cough and shortness of breath. A mass in the right upper lobe is found and a biopsy is performed. According to the histopathology image below, what is your diagnosis?

 

What is your diagnosis?