There is diagnostic contrast opacification of the pulmonary arteries. There is no evidence of pulmonary embolus. Right thyroid lobe is enlarged and extends down beside the trachea until the right main pulmonary bronchus, circumscribed, and exhibiting heterogeneous attenuation with some scattered central calcifications. There is mild leftward displacement of the trachea and oesophagus, anterior compression over the superior vena cava, and compression over the lung right upper lobe. Subtle mosaic attenuation pattern in the lower lobes. Lungs are otherwise unremarkable. The pleural spaces are clear. There is no lymph node enlargement.