Accidental Cannulation of Persistent Left Superior Vena Cava in a Case of Absent Right Internal Jugular Vein: A Case Report on the Role of Ultrasonography and X-Ray.

Persistent left superior vena cava is a rare vascular anatomical variant. Although ultrasonography has facilitated the process of central venous catheterization, it cannot be used to locate the tip of a catheter. Postprocedure chest X-ray is desirable for locating the course and tip of the catheter.