Fig. 3
From: Esophageal pulmonary fistula – a rare complication of radiation therapy: a case report
a, b Coronal and axial thoracic contrast-enhanced computed tomographic scans (lung and soft tissue window, respectively) show a condensation of the apical segment of the left upper lobe with parenchymal excavations (arrowheads) and extended pulmonary infiltrations involving the whole lobe. A fistula between the esophagus and left upper lung is suspected due to the presence of air in the mediastinum (arrows). c–e Videofluoroscopic studies showing contrast leakage through a fistulous tract (arrowheads) originating from the upper esophagus and progressively joining the left apical lung without contrast bronchogram, thus confirming the esophagopulmonary type of fistula