title: Non-Cardiovascular Computed Tomography Incidental Findings in Patients Who Underwent Transaortic Valve Implantation Procedure.
abstract: BACKGROUND
  Transcatheter aortic valve implantation (TAVI) is a new treatment option for patients with severe aortic stenosis. Pre-TAVI procedure workup includes computed tomography angiography (CTA) of the heart and aorta from aortic annulus to the iliofemoral arteries. Frequently, there are a number of incidental non-cardiac findings (INCFs) in pre-TAVI CTA. However, the frequency and clinical significance of these INCFs are unknown. The aim of our study was to investigate the prevalence of INCFs and their clinical significance.
  
  
  METHODS
  This was a retrospective review of 67 patients who underwent dedicated pre-TAVI CTA from 2010 till 2015. Non-cardiovascular INCFs were classified according to their clinical significance into three categories. The first category includes findings that may require urgent treatment. The second category includes findings that need further follow-up. The third category includes incidental findings that require no further follow-up or recommendation.
  
  
  RESULTS
  The total number of patients was 67, and the mean age was 73 ± 8 years. All patients had INCFs and the total number was 248. Of the patients, 69% had chest findings, 85% had abdominal findings, and 33% had musculoskeletal findings. Results based on categorical classification were as follows: 9%, 25%, and 66% of these 248 findings belong to the first category, the second category, and the third category, respectively.
  
  
  CONCLUSIONS
  Non-cardiovascular INCFs are common in pre-TAVI CTA presumably due to increased age of such specific population. These findings have variable clinical significance and some of them might require acute treatment or additional evaluation, and should be managed properly taking into consideration patient's life expectancy and comorbidities.
authors.affiliation: Department of Radiology, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Fathala
authors.affiliation: Department of Radiology, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.
authors.forename: Mnahi
authors.initials: M
authors.lastname: Bin Saeedan
authors.affiliation: King Faisal Heart Institute, Riyadh, Saudi Arabia.
authors.forename: Ali
authors.initials: A
authors.lastname: Zulfiqar
authors.affiliation: King Faisal Heart Institute, Riyadh, Saudi Arabia.
authors.forename: Hani
authors.initials: H
authors.lastname: Al Sergani
keywords: Cardiac CT; Incidental non-cardiac findings; TAVI