“…In the posterior mediastinal route, gastric tube perforation generally occurs into the thoracic cavity, which is serious and sometimes fatal. 1 , 5 , 6 , 7 , 8 By contrast, retrosternal‐reconstructed gastric tube perforation is less severe due to the narrow space in the retrosternal cavity. 9 However, in the present case, due to the repeated gastric tube ulcer recurrence and chronic inflammation, penetration between the gastric tube and pericardium occurred, resulting in retrosternal and pericardial abscess formation.…”