長瀬 通隆¹, 古瀬 純司¹, 丸 泰司¹, 目良 清美¹, 住 一¹, 吉野 正曠¹, 木下 平², 長谷部 孝裕³, 落合 淳志³

Michitaka NAGASE¹, Junji FURUSE¹, Yasushi MARU¹, Kiyomi MERA¹, Hajime SUMI¹, Masahiro YOSHINO¹, Taira KINOSHITA², Takahiro HASEBE³, Atsush OCHIAI³

¹国立がんセンター東病院内科, ²国立がんセンター東病院外科, ³国立がんセンター東病院研究所臨床腫癌病理部

¹Department of Internal Medicine, National Cancer Center Hospital East, ²Department of Surgery, National Cancer Center Hospital East, ³Department of Pathology, National Cancer Center East Research Institute

キーワード : Color Doppler ultrasonography, Differential diagnosis, Neuroendocrine tumor, Pancreatic cancer

We conducted color Doppler ultrasonographic examination (CDU) of 123 patients with pancreatic tumors to determine if CDU can be used in the differential diagnosis of these lesions. Results of pathologic diagnosis showed 92 of these tumors to be ductal carcinomas; 9, intraductal papillary adenomas or adenocarcinomas; 5, neuroendocrine tumors; 3, mucinous cystadenomas or cystadenocarcinomas; 3, serous cystadenomas; 3, solid cystic tumors; 2, adenosquamous carcinomas; 2, leiomyosarcomas; and 4, tumors forming chronic pancreatitis. Color images were detected in 5 (5%) of the 92 ductal carcinomas, 4 (80%) of the 5 neuroendocrine tumors, and all of the 2 adenosquamous carcinomas and 2 leiomyosarcomas. Wave forms by the fast Fourier transform (FFT) algorithm mode were pulsatile in 2 (40%) of the 5 ductal carcinomas with color images and pulsatile in 7 (78%) of the 9 non-ductal tumors with color images. The results suggest that examination of blood flow by CDU is useful for differentiating pancreatic tumors.