A patient underwent lung transplantation.  Below is the gross appearnce of the PM lung.  What could be your possible diagnosis?
Ref. Robbins Pathology. 9th edition. Page 371
Miliary Tuberculosis

When the immune response is poor or is overwhelmed by an extensive infection, then it is possible to see the gross pattern of granulomatous disease seen here.
This is a "miliary" pattern of granulomas because there are a multitude of small tan granulomas, about 2 to 4 mm in size, scattered throughout the lung parenchyma.
The miliary pattern gets its name from the resemblence of the granulomas to millet seeds.
Bronchiectasis
Lung abscess
Lung carcinoma
Miliary tuberculosis