CXR

Question 1

what are the causes of bilateral hilar lymphadenopathy

Answer 1

sarcoidosis; infection eg TB; malignancy eg lymphoma, carcinoma; EAA; organic dust disease; histiocytosis

Question 2

what are the causes of upper zone fibrotic shadowing

Answer 2

TB, sarcoidosis, EAA, AS, radiotherapy

Question 3

what are the causes of mid zone fibrotic shadowing

Answer 3

progressive massive fibrosis

Question 4

what are the causes of lower zone fibrotic shadowing

Answer 4

asbestosis, idiopathic pulmonary fibrosis

Question 5

differential diagnosis of a nodule in the lung on CXR

Answer 5

malignancy, abscess, granuloma, carcinoid tumour, pulmonary hamartoma, arterio-venous malformation, encysted effusion, cyst, foreign body, skin tumour