EUS elastographic patterns of normal pancreas and focal pancreatic lesions
10.3760/cma.j.issn.1007-5232.2010.09.006
- VernacularTitle:正常胰腺及胰腺占位病变超声内镜弹性成像特点初步研究
- Author:
Kai XU
;
Dabin REN
;
Xiaomin SUN
;
Jing WANG
;
Ping XU
- Publication Type:Journal Article
- Keywords:
Pancreas;
Endoscopic ultrasonography;
Elastography;
Diagnosis
- From:
Chinese Journal of Digestive Endoscopy
2010;27(9):461-464
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the EUS elastographic patterns of normal pancreas and focal pancreatic lesions, and its value for characterizing and differentiating between benign and malignant pancreatic tissues. Methods Between January and June 2009, 6 patients with normal pancreas and 9 patients with focal pancreatic lesions were enrolled. Real-time elastography was carried out during the conventional EUS examination. The elastographic images were scored with 1 to 5 based on the elastographic pattern. Results Nine focal pancreatic lesions were finally diagnosed as pancreatic cancer (n = 4), cyst-adenocarcinoma (n =1), cyst-adenoma (n = 2) and focal pancreatitis (n = 2), respectively. Pancreatic cancers were scored as 3(n = 1) and 4 (n = 3). Cyst-adenocarcinoma was scored as 5 and cyst-adenomas were scored both as 2,while focal pancreatitis were scored as 2 and 3, respectively. Elastographic pattern was scored as 1 (n = 5)and 2 (n = 1) in 6 normal pancreas. When scores 1 and 2 were assigned to benign lesion and 3 to 5 to malignancy, the overall diagnostic accuracy of EUS elastography for focal pancreatic lesions was 88. 9%(8/9). Conclusion There are apparent differences in elastographic patterns between benign and malignant pancreatic tissues. EUS elastography is a promising method that allows characterization and differentiation of benignancy and malignancy.
