article 2022 A Unique Case of Thoracic Endometriosis Syndrome and Pulmonary Langerhans' Cell Histiocytosis: Six Recurrent Pneumothoraces ·doi:10.1055/s-0042-1747788 Background The diagnosis and treatment of spontaneous pneumothorax (SP) in women of reproductive age caused by thoracic endometriosis syndrome (TES) is challenging.