title: [Bougie endosonography in the preoperative diagnosis of stenosing esophageal carcinomas].
abstract: OBJECTIVE
  Nowadays ultrasonic endoscopy is accepted as the most accurate method in the preoperative TNM staging of oesophageal tumour. At the time a diagnosis of oesophageal is made, 25-62% of patients have marked oesophageal stricture due to an advanced stage of the tumour. As a result, it is often impossible to pass a conventional endoscope and the examination is incomplete or a dilator has to be introduced at high risk of perforation or other complications. An ultrasonic oesophagoprobe (Olympus MH 908) with a diameter of 7.9 mm, its tip acting as a dilator has been developed so that even in high-grade oesophageal stricture a complete and low-risk investigation can be undertaken. The value of this instrument has been compared prospectively with that of a standard ultrasonic endoscope in patients with oesophageal stricture due to carcinoma and in relation to the postoperative histology.
  
  
  METHODS
  Between May 1996 and February 1997, 62 patients (55 men, 7 women; average age 55.8 [41-82] years) with suspected or histologically confirmed oesophageal carcinoma were examined with the standard ultrasonic endoscope and the new oesophagoprobe. The two independent results were related to the postoperative histology.
  
  
  RESULTS
  It was possible to compare the endoscopic results with the postoperative histology in 47 patients. In 55.8% it was not possible to pass the stricture with the standard ultrasonic endoscope (SE) so that an accuracy of only 41% was obtained in the T stage and 56.4% in the N stage. But with the oesophagoprobe (OP) an accuracy of 74.5% in the T stage and of 63% in the N stage were achieved. The difference in the findings between the two instruments was highly significant (p < 0.001) in those patients in whom the SE could not be passed through the stricture. For the T stage the accuracy was 14.3% vs. 76.2% (SE vs. OP); in the N stage it was 38.1% and 57.2%, respectively. When both instruments could be passed the results were comparable.
  
  
  CONCLUSIONS
  Examination with the ultrasonic oesophagoprobe is a reliable and accurate method free of complications for the preoperative assessment of oesophageal carcinoma with stricture.
authors.affiliation: Medizinische Klinik mit Schwerpunkt Hepatologie und Gastroenterologie, Charité, Campus Virchow Klinikum, Berlin. nicolas.hoepffner@charite.de
authors.forename: N
authors.initials: N
authors.lastname: Hoepffner
authors.forename: J
authors.initials: J
authors.lastname: Pohle
authors.forename: J
authors.initials: J
authors.lastname: Menzel
authors.forename: H
authors.initials: H
authors.lastname: Notberg
authors.forename: W
authors.initials: W
authors.lastname: Domschke
authors.forename: E C
authors.initials: EC
authors.lastname: Foerster
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology; D019160:Endosonography / Q000295:instrumentation* / Q000379:methods / Q000706:statistics & numerical data; D004938:Esophageal Neoplasms / Q000150:complications / Q000000981:diagnostic imaging* / Q000473:pathology; D004940:Esophageal Stenosis / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D004947:Esophagus / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging; D011300:Preoperative Care / Q000295:instrumentation* / Q000379:methods; D011446:Prospective Studies