Cameron et al 1 reported two cases of bronchiolitis obliterans organising pneumonia (BOOP) associated with the use of nitrofurantoin. These patients had a favourable outcome after treatment with corticosteroids. We wish to report a similar case.

An 82 year old woman presented in 1997 with a two year history of a cough productive of white sputum and gradually increasing breathlessness. She gave a history of 41 pack years of smoking but had stopped 23 years previously. Before referral she had received treatment with inhaled steroids and bronchodilators but without any effect on her …