Pulmonary Endometriosis - a Rare Differential Diagnosis of Lung Cancer

Endometriosis is characterised by the presence of ectopic functional endometrial tissue outside the uterus. The disease most frequently affects pelvic tissues and organs but any site can be involved including gastrointestinal tract, lungs and other organs. Extra-pelvic endometriosis mostly occurs in females aged 35–40 years. Here we report a well-documented, morphologically proved and surgically treated case of pulmonary endometriosis in a 50-year-old woman in order to heighten the awareness of endometriosis as the differential diagnosis for nodular lung lesions.