Patient With History of COPD Presents With Abdominal Pain

November 30, 2016

A 60-year-old man with a history of chronic obstructive pulmonary disease presents with pain in the left side of his abdomen. What is your diagnosis?

A 60-year-old man with a history of chronic obstructive pulmonary disease (COPD) presents with pain in the left side of his abdomen. A biopsy is performed.

Based on the image shown, what is your diagnosis?