Description of event according to article: initial repair of the taaa was done by bevar where a 4-branched stent graft was created by the physician via modification of a tx2.The modification included sewing on viabahn covered stents (from another manufacturer) on the tx2 stent graft to create 4 directional branches.After the procedure there was initially a decrease in sac diameter, but at 35 months after the procedure the aneurysm sac had enlarged.Enlargement continued.Patient outcome: the stent grafts remained in the patient as intended occult endoleak 4 years after the initial procedure, endovascular repair by bevar was needed.
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