Fig. 1

Normal position of implanted port system. a Chest radiograph shows the tip of the venous catheter projecting onto the intersection with the intermediate bronchus, which suggests position in the SVC. b Coronal MDCT reformation (soft tissue window and minimum intensity projection of lung window) shows that intersection of the tip with intermediate bronchus indicates correct position in the SVC. c, d Flow confirmation study (c) before and (d) after injection of contrast. The port chamber is completely opacified (arrow), the venous tube does not show leakage, and contrast material exits freely at the tip flowing in antegrade direction (small arrows)