Fig 2.

Acute pulmonary haemorrhage. Patient with vasculitis presenting with diffuse alveolar haemorrhage. Non-specific findings, with widespread interstitial opacification. The differential diagnosis includes infection, with opportunist infection possible. In such a case, early bronchoscopy with bronchoalveolar lavage should be considered once the patient's condition has been stabilised - however, transbronchial biopsy can be hazardous. A tissue diagnosis may have to wait open-lung biopsy.¹⁵ Reproduced with permission from Informa Healthcare.¹⁴