Fig. 10

This patient had a prophylactic filter (Argon Option Elite IVC; Argon Medical Devices, Plano, TX) placed after an motor vehicle accident. The patient presented for retrieval 5 months later. Initial cavagram shows normal appearing and upright filter. The hook was easily snared but embedded legs precluded sucessful removal. Subsequent cavagram show non-occlusive thrombus and filter distortion. Partial caval thrombus was a frequent finding (31%) in patients who were undergoing filter retrieval with adherant legs (Kuo et al. 2009)