Indwelling catheters serve as nidus for thrombosis and neonatal thrombotic events are reported in low birth weight neonates with history of umbilical catheter or peripherally inserted central catheter. The knowledge of natural history of thrombotic events is not known in newborns. Management options includes ”wait and watch” policy (expected management), medical treatment with low molecular weight heparin (LMWH) or surgery. We report a case of late preterm complicating with superior vena cava thrombosis extending to tricuspid valves and complete recovery of thrombus without anticoagulation therapy.

Keywords: Thrombosis; Umbilical Catheter; Wait and Watch.