title: [Analysis of endoleak in short term after endovascular aneurysm repair for abdominal aortic aneurysms].
abstract: OBJECTIVE
  To observe the occurrence condition of endoleak after endovascular aneurysm repair (EVAR) operation for abdominal aortic aneurysm (AAA), and to analyze the factors of the endoleak.
  
  
  METHODS
  Between July 2005 and June 2013, 210 cases of AAA were treated with EVAR. Of 210 patients, 175 were male and 35 were female, aging 42-89 years (mean, 65.7 years). The patients were all proved to have infrarenal AAA by computed tomography angiography (CTA). The disease duration ranged from 1 week to 2 years (median, 11.3 weeks). The maximum diameter of the aneurysms was 44-72 mm (mean, 57.3 mm). The proximal landing zone was longer than 1.5 cm. CTA was performed routinely at 2 months after operation to detect the endoleak of contrast agent. If endoleak was found, CTA was performed again at 6 months. If obvious endoleak still existed, digital subtraction angiography (DSA) would be performed to clarify the character and the degree of the endoleak, and EVAR should be done if necessary.
  
  
  RESULTS
  Endoleak occurred in 31 cases (14.8%) during operation, including 11 cases of type I endoleak (8 cases of type IA and 3 cases of type IB), 18 cases of type II endoleak, and 2 cases of type III endoleak (type IIIB). The patients were followed up 2-8 months (mean, 3.1 months). At 2 months after operation, contrast agent endoleak was found in the remnant aneurysm cavity of 12 cases (5.7%). At 6 months after eperation, contrast agent endoleak was found in 10 cases (4.8%) by CTA. In 8 patients receiving DSA, there were 4 cases of type I endoleak (3 cases of type IA and 1 case of type IB), 3 cases of type II endoleak, and 1 case of type III (type IIIB) endoleak. In 5 patients having type I and type III endoleak, collateral movement of stent graft was observed in different degree; after increased stent graft was implanted, the endoleak disappeared after 2-4 months. The patients having type II endoleak were not given special treatment, endoleak still existed at 2 months after reexamination of CTA, but the maximum diameter of AAA had no enlargement.
  
  
  CONCLUSIONS
  The collateral movement of stent graft is a very important factor to cause type I and type III endoleak in the patients of AAA after EVAR, and endoleak can be plugged by EVAR again.
authors: Department of Vascular and Endovascular Surgery, Nanjing Drum Tower Hospital, the Affiliated Hosptial of Nanjing University Medical School, Nanjing Jiangsu, 210008, P.R.China. wanderstranger@sina.com
authors: Dian
authors: D
authors: Huang
authors: Department of Vascular and Endovascular Surgery, Nanjing Drum Tower Hospital, the Affiliated Hosptial of Nanjing University Medical School, Nanjing Jiangsu, 210008, P.R.China.
authors: Min
authors: M
authors: Zhou
authors: Department of Vascular and Endovascular Surgery, Nanjing Drum Tower Hospital, the Affiliated Hosptial of Nanjing University Medical School, Nanjing Jiangsu, 210008, P.R.China.
authors: Changjian
authors: C
authors: Liu
authors: Department of Vascular and Endovascular Surgery, Nanjing Drum Tower Hospital, the Affiliated Hosptial of Nanjing University Medical School, Nanjing Jiangsu, 210008, P.R.China.
authors: Tong
authors: T
authors: Qiao
authors: Department of Vascular and Endovascular Surgery, Nanjing Drum Tower Hospital, the Affiliated Hosptial of Nanjing University Medical School, Nanjing Jiangsu, 210008, P.R.China.
authors: Feng
authors: F
authors: Ran
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging / Q000601:surgery*; D001027:Aortography / Q000379:methods; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects / Q000379:methods; D057867:Endoleak / Q000000981:diagnostic imaging / Q000601:surgery*; D057510:Endovascular Procedures / Q000379:methods*; D005260:Female; D006801:Humans; D017543:Iliac Aneurysm / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D012086:Reoperation; D012189:Retrospective Studies; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome