A vascular access port configured to be implanted subcutaneously comprising a housing； a septum affixed to the housing； an internal reservoir collectively defined by the septum and the housing； an outlet stem defining a lumen configured to be in fluid communication with the internal reservoir and having a retention feature on an outer surface of the outlet stem； a connecting element slidingly engageable over an outer surface of the distal end of the catheter positioned over the outlet stem； and one or more markers on the connecting element and discernable following subcutaneous implantation of the access port. The outlet stem is configured to receive a distal end of a catheter such that the distal end of the catheter is positioned over the retention feature of the outlet stem. Related systems and methods of use are described.
