[Recurrent bronchiolitis obliterans organizing pneumonia as first manifestation of polymyositis].

The case of an idiopathic polymyositis preceded by several episodes compatible with the diagnosis of bronchiolitis obliterans organizing pneumonia is herein reported. This kind of pulmonary affection in polymyositis can be simultaneous or later to the diagnosis of the systemic disease, but as the first manifestation is exceptional. In the case we report, paradoxically, when the diagnosis of polymyositis was made the patient had not clinical or radiographic bronchopulmonary affection. If the first clinical manifestation of an autoimmune disease like polymyositis can be an idiopathic bronchiolitis obliterans organizing pneumonia, we think that a prolonged follow up of these patients is necessary.