title: Anastomotic aneurysms after surgical treatment of Takayasu's arteritis: a 40-year experience.
abstract: OBJECTIVE
  To evaluate the clinical characteristics of anastomotic aneurysms that develop in surgically treated patients with Takayasu's arteritis.
  
  
  METHODS
  Among 103 patients with Takayasu's arteritis treated surgically over 40 years, 91 patients with 259 anastomoses (allowing for exclusion of 12 operative deaths) participated in follow-up study from 1 month to 37.3 years with a mean value +/- SEM of 17.3 +/- 1.1 years with a follow-up completion rate of 93% at 30 years. The clinical characteristics of anastomotic aneurysms were clarified, and the influences of several factors (sites of anastomoses, occlusive or aneurysmal disease, suture material, preoperative systemic inflammation, and administration of corticosteroids) on formation of anastomotic aneurysms were analyzed by means of life-table method and Cox regression analysis.
  
  
  RESULTS
  Twenty-two uninfected anastomotic aneurysms were found among 14 patients (22 of 259 anastomoses, 8.5%). The interval between the previous operation and diagnosis varied from 1.6 to 30 years with a mean value +/- SEM of 9.8 +/- 1.8 years. The cumulative incidence of anastomotic aneurysm at 20 years was 12.0%. Systemic inflammation or steroid administration had little influence on formation of anastomotic aneurysm. Instead, anastomotic aneurysm tended to occur after operations for aneurysmal lesions.
  
  
  CONCLUSIONS
  Anastomotic aneurysm can occur anytime after operations for Takayasu's arteritis. The development of anastomotic aneurysm is not influenced by any factor specific to this disease except the presence of an aneurysmal lesion.
authors.affiliation: Second Department of Surgery, Faculty of Medicine, The University of Tokyo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Miyata
authors.forename: O
authors.initials: O
authors.lastname: Sato
authors.forename: J
authors.initials: J
authors.lastname: Deguchi
authors.forename: H
authors.initials: H
authors.lastname: Kimura
authors.forename: T
authors.initials: T
authors.lastname: Namba
authors.forename: K
authors.initials: K
authors.lastname: Kondo
authors.forename: M
authors.initials: M
authors.lastname: Makuuchi
authors.forename: C
authors.initials: C
authors.lastname: Hamada
authors.forename: A
authors.initials: A
authors.lastname: Takagi
authors.forename: Y
authors.initials: Y
authors.lastname: Tada
mesh_terms: D000293:Adolescent; D000328:Adult; D000714:Anastomosis, Surgical / Q000009:adverse effects; D017541:Aneurysm, False / Q000209:etiology* / Q000601:surgery; D001011:Aorta / Q000601:surgery*; D002648:Child; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D015993:Life Tables; D008297:Male; D008875:Middle Aged; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D012307:Risk Factors; D013625:Takayasu Arteritis / Q000601:surgery*; D013997:Time Factors