TY - JOUR
T1 - Multiphase CT enterography evaluation of small-bowel vascular lesions
AU - Huprich, James E.
AU - Barlow, John M.
AU - Hansel, Stephanie L.
AU - Alexander, Jeffrey A.
AU - Fidler, Jeff L.
PY - 2013/7
Y1 - 2013/7
N2 - OBJECTIVE. By use of multiphase CT enterography (CTE), small-bowel vascular lesions associated with gastrointestinal bleeding can be classified into three categories-angioectasias, arterial lesions, and venous abnormalities-on the basis of common morphology and enhancement patterns. This article will review the unique patterns of enhancement and lesion morphology seen on multiphase CTE and how those findings enable detection and characterization of specific lesions in many cases. CONCLUSION. Because of the high prevalence in nonbleeding patients and frequent multiplicity of angioectasias, determining the clinical benefit from their detection by multiphase CTE and endoscopy is problematic. Although arterial lesions are less commonly encountered clinically, their detection is critically important because of a high risk of life-threatening bleeding. Along with wireless capsule endoscopy and balloon-assisted endoscopy, multiphase CTE is a useful tool for the evaluation of patients with obscure gastrointestinal bleeding due to small-bowel vascular lesions.
AB - OBJECTIVE. By use of multiphase CT enterography (CTE), small-bowel vascular lesions associated with gastrointestinal bleeding can be classified into three categories-angioectasias, arterial lesions, and venous abnormalities-on the basis of common morphology and enhancement patterns. This article will review the unique patterns of enhancement and lesion morphology seen on multiphase CTE and how those findings enable detection and characterization of specific lesions in many cases. CONCLUSION. Because of the high prevalence in nonbleeding patients and frequent multiplicity of angioectasias, determining the clinical benefit from their detection by multiphase CTE and endoscopy is problematic. Although arterial lesions are less commonly encountered clinically, their detection is critically important because of a high risk of life-threatening bleeding. Along with wireless capsule endoscopy and balloon-assisted endoscopy, multiphase CTE is a useful tool for the evaluation of patients with obscure gastrointestinal bleeding due to small-bowel vascular lesions.
KW - Angioectasia
KW - CT
KW - CT enterography
KW - Obscure gastrointestinal bleeding
KW - Small-bowel vascular lesions
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U2 - 10.2214/AJR.12.10414
DO - 10.2214/AJR.12.10414
M3 - Review article
C2 - 23789659
AN - SCOPUS:84883442229
SN - 0361-803X
VL - 201
SP - 65
EP - 72
JO - American Journal of Roentgenology
JF - American Journal of Roentgenology
IS - 1
ER -