Factors Affecting the Regression of Surgically Replaced Abdominal Aortic Aneurysms

Abstract

The surgically repaired abdominal aortic aneurysm contraction tends to develop over 3 months, and inflammation, thickening, and calcification of the aneurysm wall are all considered to influence the regression of the aneurysm.

Type I Endoleak-like Phenomenon Causing Rupture of the Replaced Aneurysm Sac 12 Years after Open Repair of Abdominal Aortic Aneurysm

“…At 1 year, the attached aneurysm sac directly covered the prosthesis. 8) Regression was rapid and complete as compared with findings after stent graft repair, where complete regression is relatively rare. In patients who undergo AAA surgery with a polytetrafluoroethylene graft, however, aneurysm sac regression may follow a different course, where a perigraft seroma can produce similar aneurysm sac expansion.…”

“…A case of type III endoleak caused by a defect in the mid-portion of the body of the bifurcation graft also was reported 14 years after replacement of the AAA. 6) We recently studied regression of 35 surgically replaced AAA that had been 5 cm or larger according to preoperative contrast-enhanced CT. 8) In the replacement surgery, a Dacron graft was anastomosed intraluminally, and the aneurysm wall was closed with continuous polypropylene suture after graft insertion. The aneurysm sac was observed regularly after surgery by CT. From 1 week to 3 months after surgery, the major and minor diameter of the aneurysmal sac both decreased significantly (major diameter, from 49 ± 12 mm to 32 ± 8 mm; minor diameter, from 39 ± 10 mm to 26 ± 7 mm).…”