title: Miniature ultrasonic probes for diagnosis and treatment of digestive tract diseases.
abstract: OBJECTIVE
  To investigate the clinical value of miniature ultrasonic probes (MUPs) for the diagnosis and treatment of digestive tract diseases.
  
  
  METHODS
  Endoscopic ultrasonography (EUS) was performed for patients with its indications with 7.5-20 MHz MUPs and double-cavity electronic endoscope. According to the diagnosis of MUPs, patients who had indications of treatment received endoscopic resection or surgical excision. Postoperative histological results were compared with the preoperative diagnosis of MUPs. A few patients without endoscopic resection or surgical excision were periodically followed up with MUPs.
  
  
  RESULTS
  A total of 537 patients were examined by MUPs, of them, 256 were diagnosed with gastrointestinal submucosal lesions, 146 with pseudo-submucosal lesions, 50 with digestive tract cancers, 17 with peptic ulcer, 11 with cholecystolithiasis, 8 with chronic pancreatitis, and 2 with achalasia and 47 were diagnosed as normal. After MUPs examinations, 220 patients received endoscopic resection or surgical excision, and the postoperative histological results of 211 patients were completely consistent with the preoperative diagnosis of MUPs. The diagnostic accuracy of MUPs was 95.9%. The result of follow-up with MUPs indicated that gastrointestinal leiomyoma, lipoma, phlebangioma and cyst were unchanged within 1-2 years. The patients who received endoscopic resection or centesis did not have any complications.
  
  
  CONCLUSIONS
  MUPs are of value in diagnosing gastrointestinal submucosal lesions, staging of digestive tract cancers and biliary-pancreatic diseases. They play a very important role in making therapeutic plans.
authors.affiliation: Department of Gastroenterology, First Affiliated Hospital, Medical School of Zhejiang University, Hangzhou 310003, Zhejiang Province, China. xuguoqi@mail.hz.zj.cn
authors.forename: Guo-Qiang
authors.initials: GQ
authors.lastname: Xu
authors.forename: Yong-Wei
authors.initials: YW
authors.lastname: Li
authors.forename: Yong-Mei
authors.initials: YM
authors.lastname: Han
authors.forename: You-Ming
authors.initials: YM
authors.lastname: Li
authors.forename: Wei-Xing
authors.initials: WX
authors.lastname: Chen
authors.forename: Feng
authors.initials: F
authors.lastname: Ji
authors.forename: Jing-Hua
authors.initials: JH
authors.lastname: Li
authors.forename: Qing
authors.initials: Q
authors.lastname: Gu
mesh_terms: D000236:Adenoma / Q000000981:diagnostic imaging; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001660:Biliary Tract Diseases / Q000000981:diagnostic imaging*; D002908:Chronic Disease; D019160:Endosonography / Q000295:instrumentation* / Q000379:methods*; D005260:Female; D005753:Gastric Mucosa / Q000000981:diagnostic imaging; D005770:Gastrointestinal Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D007413:Intestinal Mucosa / Q000000981:diagnostic imaging; D007889:Leiomyoma / Q000000981:diagnostic imaging*; D008067:Lipoma / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D008904:Miniaturization; D010195:Pancreatitis / Q000000981:diagnostic imaging*; D010437:Peptic Ulcer / Q000000981:diagnostic imaging