Migrating intrathoracic gallstone: imaging findings.

We present the case of a 76-year-old man referred to our hospital with a round stone in central mediastinum and pneumomediastinum in chest radiography and computed tomography. He had a previous history of attempt of endoscopic retrievement of a gallstone that had caused a gastric outlet obstruction (Bouveret syndrome). To our knowledge, this is the first imaging description of mediastinal gallstone caused by esophagus perforation during complicated endoscopic lithotomy.