Spontaneous recurrent menstrual pneumothorax: a case report.

Introduction And Importance: Endometriosis is most commonly found in the pelvic area, ~12% of people have it in other areas or organs, which is known as extrapelvic endometriosis. Thoracic endometriosis, which is also classified as extrapelvic endometriosis, manifests with four distinct forms: catamenial pneumothorax, catamenial hemothorax, catamenial hemoptysis, or lung nodules. Catamenial pneumothorax is the most common clinical symptom of these; however, it is frequently neglected by clinicians and goes undiagnosed and untreated.