The diagnostic accuracy of pericolonic fat extension and attenuation for XXXX .

@entity9689 @entity1 @entity5 @entity14
OBJECTIVE: To evaluate the utility of quantitative analysis of the extension and attenuation of pericolonic fat in the local staging of @entity14 ( @entity14 ) using @entity9689 ( @entity9689 ). MATERIALS AND METHODS: This was a retrospective study of 110 @entity1 who were operated due to pathologically proven @entity14 from January 2007 to January 2010, and who underwent preoperative @entity9689 of the abdomen and pelvis with administration of intravenous contrast material and image acquisition during the portal venous phase. The mean age was 69 years (range of 38-90 years). Pathological reports were reviewed for TNM staging. All @entity9689 studies were reviewed by two certified radiologists for maximal and minimal @entity5 diameter, extent of the infiltrated pericolonic fat (measured in mm), attenuation of the infiltrated pericolonic fat (measured in Hounsfield units), and attenuation of normally appearing fat next to the @entity5 . The sensitivity and specificity of these parameters in detecting @entity1 with >=  T3 @entity14 were calculated. RESULTS: The overall sensitivity, specificity, and accuracy of pericolonic fat infiltration in detecting @entity1 with >= T3 stage were 95% (95% CI, 89.0-98.7%), 20% (5.8-43.7%), and 81.9% (74.7-89%) respectively. The mean extent and attenuation of the infiltrated pericolonic fat, in addition to the maximal @entity5 diameter, were higher in the >= T3 group (p<0.05). By defining threshold values to these parameters, the positive predictive value for detecting >= T3 stage @entity5 approaches 100%. CONCLUSION: Quantitative analysis of pericolonic fat increased the accuracy of @entity9689 in the detection of @entity5 spread in @entity14 .
