Bronchoscopy seen below

A 65-year-old man who works at a factory in town presents with fatigue, weight loss, arthralas, and a chronic, non-productive cough: Xray shows a reticular pattern and bx from bronchoscopy seen below. Patient has a negative Kveim test. What is the most likely diagnosis?


A. asbestosis
B berylliosis
C coal workers’ pneumoconiosis
D sarcoidosis
E silicosis