The cause of<unk>  is unknown. Those with previous surgeries are more prone to developing<unk>  due to the surgical manipulation that can cause embolisation of the endometrial tissue into the<unk>  cavity. Some<unk>  patients have been described as having a congenital defect in the diaphragm. There is also an association between<unk>  and pelvic<unk> .
Thoracic endometriosis
Cervical thymic cyst
Inguinal lymphadenopathy
Cervical lymphadenopathy
Subphrenic abscess
Lung hernia
Paraproctitis
Diaphragmatic hernia