title: Computed tomography angiography of aorta subjected to external wrapping.
abstract: BACKGROUND
  External wrapping is a surgical technique used in patients with dilated ascending aorta. To date, there is no available data describing the radiographic features of the aorta subjected to external wrapping using a straight corrugated Dacron vascular prosthesis. The aim of this study was to find distinctive radiographic features of an externally constricted aorta.
  
  
  METHODS
  Preoperative and early postoperative (7th postoperative day) CT angiography images of ten patients who underwent wrapping procedures were assessed and compared. The images were analyzed in order to find characteristic features of CT angiography images of the ascending aorta subjected to external wrapping.
  
  
  RESULTS
  The CT-angiography images showed that the aortic wall deformed significantly (the wall plicated) after the wrapping procedure in one patient, whose aortic diameter was decreased by 47 %. The remaining nine patients did not have significant aortic wall deformations. All patients presented with a periaortic mass. This was a collection of blood clots and pericardial fluid that filled the empty space in the pericardium following a decrease in the diameter of the ascending aorta. A very thin (<1 mm) crescent-shaped uncontrasted layer was noticed between the aorta and the periaortic area in all patients. This, in turn, was an empty space between the aorta and the corrugated vascular prosthesis.
  
  
  CONCLUSIONS
  The CT-angiography images of the aorta subjected to external wrapping may have unique features that are not observed after other operations on the ascending aorta. The knowledge about the details of this surgical procedure helps to correctly assess these images.
authors.affiliation: Department of Cardiac Surgery, Wroclaw Medical University, Borowska 213, 50-556, Wroclaw, Poland. tomaszplonek@gmail.com.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Płonek
authors.affiliation: Department of Cardiac Surgery, Wroclaw Medical University, Borowska 213, 50-556, Wroclaw, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Dumanski
authors.affiliation: Department of Cardiac Surgery, Wroclaw Medical University, Borowska 213, 50-556, Wroclaw, Poland.
authors.forename: Rafal
authors.initials: R
authors.lastname: Nowicki
authors.affiliation: Department of Cardiac Surgery, Wroclaw Medical University, Borowska 213, 50-556, Wroclaw, Poland.
authors.forename: Wojciech
authors.initials: W
authors.lastname: Kustrzycki
mesh_terms: D000368:Aged; D017545:Aortic Aneurysm, Thoracic / Q000000981:diagnostic imaging* / Q000601:surgery; D001807:Blood Vessel Prosthesis; D000072226:Computed Tomography Angiography; D005260:Female; D006801:Humans; D008297:Male; D011093:Polyethylene Terephthalates; D011184:Postoperative Period; D016896:Treatment Outcome
chemical_list: D011093:Polyethylene Terephthalates