[Acute dyspnoea triggered by spontaneous pneumothorax in a pregnant woman with pulmonary agenesis].

A 29-year-old pregnant woman was admitted to hospital with chest pain and dyspnoea. A thoracal computed tomography (CT) was performed to rule out pulmonary embolism, and it revealed a left-sided pneumothorax, which was treated with tube thoracostomy. Three days after discharge she was readmitted with spontaneous pressure pneumothorax. Her clinical condition did not improve, and a pulmonary scintigraphy and a new thoracal CT showed unilateral right pulmonary agenesis. Pulmonary agenesis is very rare in adulthood, and in this case it was complicated with spontaneous pneumothorax.