Misplacement of a Port Catheter: A Differentiated View

Table 1

Upper vena cava morphology (SVC) [6].

Type I	Normal anatomy with only one right-sided SVC
Type II	Abnormal anatomy with only one left-sided SVC. There is no right-sided SVC and patients present with a CXR with a noticeably small mediastinal shadow (right SVC absent)
Type III	Abnormal anatomy with a right- and a left-sided SVC
Type IIIa	The left brachiocephalic vein, connecting left and right SVC, is present
Type IIIb	The brachiocephalic vein is missing and consequently the connection between the two SVC