On dynamic enhanced MR scans, abnormal hepatic perfusion during arterial phase and abnormal enhanced collateral veins during portal phase could be seen. The above signs became more obvious on DCE-MRA.

The superficial palmar branch of radial artery, vein and nerve of the flap were anastomosed with digitales volares propriae artery, digitales dorsales vein and digitales volares propriae nerve.

Establishment and strengthen of collateral venous circulation are in favor of improvement and prognosis of the thrombosis.