title: Tubular formations in the lung.
mesh_terms: D001026:Coronary Artery Bypass; D006801:Humans; D008168:Lung / Q000473:pathology / Q000648:ultrastructure*; D008297:Male; D008875:Middle Aged; D011020:Pneumonia, Pneumocystis / Q000209:etiology / Q000473:pathology*; D065227:Transfusion Reaction