Journal of Ultrasound in Medicine, Vol 9, Issue 11 645-650, Copyright © 1990 by American Institute of Ultrasound in Medicine
Endoscopic ultrasonography in the diagnosis of depth invasion and lymph node metastasis of carcinoma of the papilla of Vater
M. Mitake, S. Nakazawa, Y. Tsukamoto, Y. Naitoh, E. Kimoto and Y. Hayashi
Second Department of Internal Medicine, Nagoya University School of Medicine, Japan.
To evaluate diagnostic accuracy of endoscopic ultrasonography (EUS) on the
extent of carcinoma of the papilla of Vater, 28 patients were
preoperatively evaluated using our EUS grading system. EUS was accurate in
diagnosing carcinoma infiltration into the duodenal proper muscle layer
(100%) and into the pancreas (75%). When compared with postoperative
histologic findings, the overall accuracy of EUS in assessing local
infiltration was 89.3%. Misdiagnoses occurred in three cases due to
microinfiltration of the carcinoma. Lymph node metastasis around the
pancreatic head was accurately diagnosed in nine cases; however, mesenteric
lymph node metastasis could not be detected in four cases because the tumor
was far from the scanning site.
