Background: Non traumatic liver herniation through a diaphragmatic defect is rare.
Case report: A 44 year old woman presented with lower lobe opacity at the right lung. Chest Computed tomography (CT) demonstrated a round tumor adjacent to the right diaphragm. Percutaneous needle biopsy revealed liver tissue. A small liver herniation through a diaphragmatic defect was detected in saggital and coronal CT views but no traumatic rupture of the diaphragm or endometriosis were documented.
Conclusions: The patient suffered from gastroesophageal reflux disease and increased transdiaphragmatic pressure from paroxysmal cough due to aspirations may have provoked the diaphragmatic rupture.
Keywords: GERD; Liver; diaphragmatic defect; gastroesophageal reflux disease; herniation; lung tumor.