In patients with catheter-associated thrombosis, is routine catheter removal recommended?

No.

Removal is recommended when the catheter is not working, infected or no longer needed, there is a contraindication to anticoagulation, or there are persistent symptoms or signs of DVT despite anticoagulation.


Source

Kucher, N. "Deep-Vein Thrombosis of the Upper Extremities"  NEJM.  3 March 2011.