A 67-year-old Caucasian male presented in January, 2013, with difficulty in breathing and pyrexia. This was following a course of antibiotics for a previous chest infection that had begun at the beginning of January and had not responded to therapy. His past medical history included chronic myeloid leukaemia, basal cell carcinoma of the throat treated in 2011, glaucoma and bilateral inguinal hernia repair (performed in 1989 and 2008). He was an ex-smoker of 21 years. His current medication was dasatinib (tyrosine kinase inhibitor) 100 µg⋅day−1, amoxicillin/clavulanic acid 625 mg three-times daily orally (changed to 1.2 g three-times daily intravenously) and bimatoprost 0.1 mg eye drops.