Fig. 4From: Diffuse alveolar haemorrhage associated with subsequent development of ANCA positivity and emphysema in three young adultsPatient 2. Histological sample, lung biopsy. a Marked accumulation of haemosiderin laden macrophages in alveolar spaces (H&E × 40). b Haemosiderin laden alveolar macrophages and focal perivascular lymphoid infiltrates (H&E × 200). c Iron encrustation of elastin fibres of small artery (H&E × 200) d Small perivascular non-necrotising granuloma (H&E × 200)Back to article page