The pulmonary arteries opacify normally without filling defects to a segmental level, no pulmonary emboli detected.
Extensive interstitial changes with subpleural predominance associated with areas of traction bronchiectasis, consistent with known underlying pulmonary fibrosis. There are also patchy areas of ground-glass opacities throughout the lungs with no definite honeycombing. Associated mediastinal lymphadenopathy.
The pulmonary arteries, in particular the left pulmonary branch, appears enlarged most consistent with increased right heart pressures. No other abnormalities are identified.