Idiopathic pulmonary fibrosis

Haemoptysis

Chronic obstructive pulmonary disease (COPD)

Air travel and illness

Chest x-ray interpretation

Acute bronchitis

Pleural effusions and thoracentesis

SARS (Severe Acute Respiratory Syndrome)

Allergic alveolitis

HIV infection

Macrocytosis (increased MCV)

Carbon monoxide poisoning

Chronic lymphocytic leukaemia (CLL)

Cardiopulmonary resuscitation (CPR)

Ear wax

Drug poisoning

An unconscious patient

Myocarditis

Pulmonary hypertension

Thrombocytopenia