<unk>  is a rare form of<unk>  where endometrial-like tissue is found in the lung parenchyma and/or the pleura. It can be classified as either pulmonary, or pleural, respectively.<unk>  is characterized by the presence of tissue similar to the lining of the uterus (the endometrium) forming abnormal growths elsewhere in the body. Usually these growths are found in the pelvis, between the rectum and the uterus, the ligaments of the pelvis, the bladder, the ovaries, and the sigmoid colon. The cause is not known. The most common symptom of<unk>  is chest pain occurring right before or during menstruation. Diagnosis is based on clinical history and examination, augmented with X-ray, CT scan, and magnetic resonance imaging of the chest. Treatment options include surgery and hormones.
Thoracic endometriosis
Cervical thymic cyst
Inguinal lymphadenopathy
Cervical lymphadenopathy
Subphrenic abscess
Lung hernia
Paraproctitis
Diaphragmatic hernia