Catamenial Pneumothorax

Abstract

Catamenial pneumothorax is the most common form of thoracic endometriosis syndrome. It is a form of spontaneous recurrent pneumothorax, occurring mostly in women of reproductive age, typically within 72h from the onset of menstruation. Although aetiology is unknown, several hypothesis have been raised trying to explain the pathogenesis behind it. We present two cases of women in reproductive age, with episodes of recurrent right pneumothorax. In surgery were visualized diaphragmatic defects compatible with the diagnosis of catamenial pneumothorax. After surgical correction and hormonal treatment,they are asymptomatic and without new episodes of pneumothorax.