Aorto-oesophageal fistula is a well-reported pathology with several known causes. The co-existence of this pathology associated with the use of a Montgomery salivary bypass tube (MSBT) is exceptional and only one case is described in the literature. We present here a case report about an 81-year-old patient with an MSBT who died because of a massive upper gastrointestinal bleeding caused by an aorto-oesophageal fistula at the site of the MSBT. The literature on this pathology will also be reviewed.