Upper gastrointestinal endoscopic ultrasonography analysis and evaluation of clinical epidemiology

Objective: To evaluate EUS of the upper gastrointestinal tract lesions with clinical epidemiology.

Methods: Collected 3032 cases of sub-cases of upper gastrointestinal EUS, analysis characteristics of EUS and test results, using epidemiological methods to forward-looking assessment the value of EUS.

Results: Uplift of upper digestive tract 1419 (1019 in wall), 664 advanced cancer, 11 early cancer, 96 ulcer disease, polyps in 142, the other 700 cases. 1019 of Protruded type lesions, of which the internal echo patterns are discrepancy. Hypoechoic is the most common (588/1019, 57.7%). At most are leiomyoma 414/414, stromal tumor 128/133, lymphoma 7/7, carcinoid 2/2 and submucosal surface cancer 26/28. Cystic pattern lesion (80/82 cysts, hemangioma 60/66, Brunner gland hyperplasia 33/36) and hyperechoic lesion (lipoma 52/54) are benign lesion at most. EUS in the diagnosis of lesions in the source level, sensitivity of 96.6%, specificity 95.1%; of cystic lesions with the substantive discrimination sensitivity of 98.7%, a specificity of 90.9%. To identify benign and malignant in 32 cases of ulcer disease, sensitivity of 82.3%, a specificity of 80.0%. Endoscopic ultrasonography in judging the sensitivity of tumor invasion depth of 85.5%, a specificity of 86.4%; on local lymph node degree of diagnostic sensitivity of 78.3%, a specificity of 80.2%.

Conclusions: EUS have a high diagnostic value in the upper gastrointestinal tract lesions. But it still has the limitations of imaging diagnostic methods, especially qualitative diagnosis.