Case Presentation: Thoracic Endometriosis Syndrome (TES) is a rare condition characterized by the presence of endometrial tissue inside the thoracic cavity. It consists of four distinct clinical entities: catamenial pneumothorax, catamenial hemothorax, hemoptysis, and pulmonary nodules. We report the case of a 47-year-old woman with TES presenting as spontaneous hemopneumothorax. Patient is a 47-year old [...]