[A rare and severe complication related to acenocoumarol therapy: intra-alveolar bleeding].

Intra-alveolar bleeding is a rare and severe medical emergency due to numerous causes. We report the clinical case of a patient who could contribute to extend the literature on this subject. The study included a 62-year old man, with a history of a trial fibrillation, under anti-vitamins K antagonist admitted with dyspnoea of sudden onset associated with haemoptysis and practising self-medication using non-steroidal anti-inflammatory drugs.