Document Detail

Extravascular incidental findings at multislice CT angiography of the abdominal aorta and lower extremity arteries: a retrospective review study.
MedLine Citation:
PMID:  16967229     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To assess the frequency and clinical impact of extravascular incidental findings on routine CT angiography of abdominal aorta or lower extremity arteries. MATERIALS AND METHODS: From January 2002 to July 2004, a total of 692 patients underwent CT angiography of abdominal aorta and lower extremity arteries. Two radiologists retrospectively reviewed by consensus cross-sectional images for the presence and clinical impact definition of extravascular findings. The revision of hospital charts, medical records, and all procedures' reports performed before and after CT angiography represented the standard of reference (SOR). RESULTS: Only 373 out of 605 patients in whom extravascular findings were found had a SOR; in these patients CT angiography obtained a true-positive incidental rate of 98.9% (369/373). For the clinical impact definition of CT-angiography incidental findings, a concordance with SOR was obtained in 56.3% of patients, whereas a subsequent investigation was required in 183 patients (183/369, 49.6%). Among clinically relevant incidental findings, a total of 35 malignancies (35/894, 3.9%) were detected in 20 patients (20/423, 4.7%); in 15 patients (15/423, 3.5%) malignancy was unknown before CT-angiography exam. CONCLUSIONS: A careful observation of cross-sectional images, even if "time consuming", is mandatory not only to assess vascular findings but also to avoid a misdiagnosis of clinical relevant extravascular findings.
Roberto Iezzi; Antonio Raffaele Cotroneo; Antonella Filippone; Francesca Di Fabio; Biagio Merlino; Lorenzo Bonomo
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Abdominal imaging     Volume:  32     ISSN:  0942-8925     ISO Abbreviation:  Abdom Imaging     Publication Date:    2007 Jul-Aug
Date Detail:
Created Date:  2007-09-10     Completed Date:  2008-01-07     Revised Date:  2009-02-10    
Medline Journal Info:
Nlm Unique ID:  9303672     Medline TA:  Abdom Imaging     Country:  United States    
Other Details:
Languages:  eng     Pagination:  489-94     Citation Subset:  IM    
Department of Clinical Sciences and Bioimaging, Institute of Radiology, University G.D'annunzio, Chieti, Italy,
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MeSH Terms
Aged, 80 and over
Angiography / methods*
Aorta, Abdominal / radiography*
Contrast Media
Incidental Findings*
Iopamidol / analogs & derivatives,  diagnostic use
Lower Extremity / blood supply*
Middle Aged
Radiographic Image Interpretation, Computer-Assisted
Retrospective Studies
Tomography, X-Ray Computed*
Reg. No./Substance:
0/Contrast Media; 62883-00-5/Iopamidol; 78649-41-9/iomeprol
Comment In:
Abdom Imaging. 2008 Nov-Dec;33(6):750-1   [PMID:  18784954 ]

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