Comparison of linear array endoscopic ultrasound and helical computed tomography for the staging of XXXX .

@entity1 @entity5 @entity3
BACKGROUND: The purpose of this study was to compare linear array endoscopic ultrasound (EUS) and helical computed tomography (CT) scan in the preoperative local staging evaluation of @entity1 with @entity5 . METHODS: @entity1 evaluated with EUS and CT for suspected @entity5 from 1996 to 2000 were analyzed. Surgical/pathology staging results were the reference standard. RESULTS: Forty-eight @entity1 (28 @entity1 and 20 @entity1 ; mean age, 62 +/- 4.9 years; range, 18-90 years) were identified. @entity5 was histologically confirmed in 44 @entity1 . Parameters evaluated included @entity5 size, lymph node @entity3 , and major vascular invasion. EUS was significantly more sensitive (100%), specific (75%), and accurate (98%) than helical CT (68%, 50%, and 67%, respectively) for evaluation of the periampullary mass (P <.05). In addition, EUS detected regional lymph node @entity3 in more @entity1 than helical CT. Sensitivity, specificity, and accuracy of EUS were 61%, 100%, and 84%, in comparison to 33%, 92%, and 68%, respectively, with CT. Major vascular involvement was noted in 9 of 44 @entity1 . EUS correctly identified vascular involvement in 100% compared with 45% with CT (P <.05). CONCLUSIONS: Linear array EUS was consistently superior to helical CT in the preoperative local staging of @entity5 .
