Diffuse alveolar haemorrhage triggered by hydrogenated vegetable oils and kerosene in a patient with a history of idiopathic pulmonary haemosiderosis.

We present a case of an adult patient known to have had idiopathic pulmonary haemosiderosis in childhood, which had been quiescent for over 20 years. He presented with the classic triad of haemoptysis, anaemia and radiological pulmonary infiltrates. Bronchoalveolar lavage sample findings showed features of diffuse alveolar haemorrhage with coexisting features of lipoid pneumonia, with the patient reporting a recent occupational exposure to hydrogenated vegetable oil and kerosene. He was treated with oral corticosteroids and made a rapid and full recovery. This is the first reported case the authors are aware of with such a trigger and these coexisting findings.