31 March 2025
: Case report 
Endovascular Stenting and Factor Xa Inhibitors for Filter-Associated Chronic IVC Occlusion: A Case Series
Challenging differential diagnosis, Unusual or unexpected effect of treatment, Patient complains / malpractice, Unexpected drug reaction, Rare disease
Pengkai Cao EG 1, Xintong Luo B 2, Ruijiao Gao B 1, Yunsong Li D 1, Liang Li D 1, Yanrong Zhang F 1, Xiangdong Liu A 1*DOI: 10.12659/AJCR.946402
Am J Case Rep 2025; 26:e946402
Figure 2. (A) A 74-year-old man who had permanent filter (Simmons Bard Inc.) placement for right lower-extremity DVT 14 years ago presented with hyperpigmentation and recurrent non-healing venous ulcers on both legs. (B) An anterograde venogram showed chronic post-thrombotic obstruction of the lower IVC and bilateral iliofemoral vein, with numerous collateral veins. (C) After stents deployment, a venogram showed venous outflow without remaining obstruction. (D) Significant improvements of hyperpigmentation and venous ulcers in follow-ups.