[Sliding massive hiatal hernia: diagnosis using computerized axial tomography]

The radiological features of one patient, entirely asymptomatic, with a paracardiac mass in the right lower lobe, are presented. Computed tomography (TC) evaluation of the chest has shown with remarkable accuracy a massive hiatal hernia, containing the whole stomach and fatty omental tissue. This case confirms TC validity as an accurate and non invasive method in differential diagnosis of chest radiological opacities and its utility to identify seat and composition of diaphragmatic hernias.