A 54-year-old woman underwent a left pneumonectomy for monolateral congenit
al pulmonary cysts, complicated by a pleural empyema without bronchial fist
ula, in the late postoperative period. The pleural empyema was evacuated an
d managed by means of a small thoracic drainage. Three months after dischar
ge the patient noticed the presence of ingesta in the pleural washing fluid
. Diagnostic and operative procedures in this rare case of non malignant, n
on traumatic gastropleural fistula are described.