| MR angiography versus color Doppler sonography in the evaluation of renal vessels and the inferior vena cava in abdominal masses of pediatric patients. | |
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MedLine Citation:
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PMID: 10397108 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Involvement of renal vessels and the inferior vena cava (IVC) plays a decisive role during operative planning for removal of abdominal masses in pediatric patients. Advantages and limitations of MR angiography and color Doppler sonography for determining these factors were evaluated. MATERIALS AND METHODS: MR angiography and color Doppler sonography were performed preoperatively in 42 neonates, infants, and children with abdominal masses and were compared with spin-echo MR imaging and with surgical findings. Variables evaluated were anatomic variants, vessel displacement, patency of vessels, collateral circulation, and intravascular tumor extension. Quality of vessel visualization was assessed in vessels not affected by tumor. RESULTS: In 88% of unaffected renal vessels, the entire vessel course could be visualized on MR angiography compared with 58% on color Doppler sonography and 43% on spin-echo MR imaging. In four of nine cases, color Doppler sonography revealed an accessory renal artery, whereas MR angiography revealed these variants in seven of nine cases. MR angiography showed 79% and color Doppler sonography 66% of displaced vessels. Unlike MR angiography, color Doppler sonography did not reveal five stenotic renal veins because they could not be completely imaged. In two cases, however, MR angiography falsely indicated an occlusion of the IVC, whereas color Doppler sonography showed residual flow. CONCLUSION: Anatomic variants, vessel displacement, collateral circulation, and neoplastic vessel infiltration were revealed more accurately by MR angiography than by color Doppler sonography. In cases in which patency of the IVC is unclear on MR angiography, color Doppler sonography should also be performed. |
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Authors:
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T Pfluger; R Czekalla; C Hundt; M Schubert; U Graubner; G Leinsinger; R Scheck; K Hahn |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: AJR. American journal of roentgenology Volume: 173 ISSN: 0361-803X ISO Abbreviation: AJR Am J Roentgenol Publication Date: 1999 Jul |
Date Detail:
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Created Date: 1999-07-28 Completed Date: 1999-07-28 Revised Date: 2008-02-15 |
Medline Journal Info:
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Nlm Unique ID: 7708173 Medline TA: AJR Am J Roentgenol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 103-8 Citation Subset: AIM; IM |
Affiliation:
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Department of Radiology, Klinikum Innenstadt, Ludwig-Maximilians-University of Munich, Germany. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Abdominal Neoplasms
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complications,
diagnosis*,
ultrasonography Child Child, Preschool Constriction, Pathologic Female Humans Infant Infant, Newborn Magnetic Resonance Angiography* Magnetic Resonance Imaging Male Renal Artery / pathology*, ultrasonography* Renal Veins / pathology*, ultrasonography* Retrospective Studies Thrombosis / diagnosis, etiology, ultrasonography Ultrasonography, Doppler, Color* Vena Cava, Inferior / pathology*, ultrasonography* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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