Three Cases of Parenchymal Pulmonary Endometriosis.

Parencymal pulmonary endometriosis is a rare gynecologic problem, characterized by cyclic hemoptysis. Lung is the origin of hemoptysis. The diagnosis is based upon the clinical history and exclusion of other causes of recurrent hemoptysis, changes in the radiologic findings of chest lesion associated with menstrual cycle. We describe three women with recurrent hemoptysis during menstruation and localized lesion on computerized tomography (CT) scanning. The patients were treated with gonadotropin releasing hormone (GnRH) agonist or surgery. We represent three cases with a brief review of literature.