title: Hidrocolonic ultrasonography in the detection of tumoral processes in the inferior gastrointestinal tract.
abstract: OBJECTIVE
  To determine the value of hidrocolonic ultrasound in the detection of proliferative lesions in the colon and to compare it with other techniques of already proven value.
  
  
  METHODS
  We performed a prospective blinded trial including 155 patients (82 males and 73 females) with ages ranging from 33 to 94 years (average of 58) and clinical and analytical criteria suggesting the existence of colonic proliferative lesions. Patients with rectal mass or those with deficient bowel preparation were excluded. Ultrasound findings were compared to those obtained by colonoscopy (133 cases) and by Barium RX studies (22 cases) and all diagnoses were always confirmed by histologic exams.
  
  
  RESULTS
  155 patients were studied. 50 of them had cancer and 46 of these 50 were diagnosed by Hidrocolonic Ultrasound (92%); 19 had polyps > 7 mm. and 15 of these (78.9%) were diagnosed by Hidrocolonic Ultrasound. Hidrocolonic Ultrasound failed to detect all the polyps < 7 mm. The overall sensitivity, specificity, positive predictive value and negative predictive value for identifying colon carcinoma were 92%, 98%, 95.8% and 96.2% respectively and for polyps > 7 mm were 78.9%, 100%, 100% and 97.1%, respectively. The mean time for examination was 14 minutes. Tolerance was good in 114 patients (73.5%), 29 showed a slight discomfort (18.7%) and 12 (7.7%) showed a great discomfort. There were no complications.
  
  
  CONCLUSIONS
  Hidrocolonic ultrasound is an innocuous, fast, well tolerated technique for detecting colonic proliferative lesions > 7 mm H.U. can be considered as a useful complementary technique to other more expensive and invasive ones, such as barium RX studies and Colonoscopy.
authors.affiliation: Department of Gastroenterology, La Paz Hospital, Madrid, Spain.
authors.forename: J M
authors.initials: JM
authors.lastname: Segura
authors.forename: E
authors.initials: E
authors.lastname: Molina
authors.forename: A
authors.initials: A
authors.lastname: Herrera
authors.forename: M A
authors.initials: MA
authors.lastname: Berges
authors.forename: J C
authors.initials: JC
authors.lastname: Erdozain
authors.forename: A
authors.initials: A
authors.lastname: Arjonilla
authors.forename: J M
authors.initials: JM
authors.lastname: Suárez
authors.forename: M
authors.initials: M
authors.lastname: González Barón
mesh_terms: D018253:Adenoma, Villous / Q000175:diagnosis / Q000000981:diagnostic imaging*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002277:Carcinoma / Q000175:diagnosis / Q000000981:diagnostic imaging*; D002430:Cecal Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging*; D003106:Colon / Q000000981:diagnostic imaging*; D003110:Colonic Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging*; D003111:Colonic Polyps / Q000175:diagnosis / Q000000981:diagnostic imaging*; D003113:Colonoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009780:Occult Blood; D012680:Sensitivity and Specificity; D012811:Sigmoid Neoplasms / Q000175:diagnosis / Q000000981:diagnostic imaging; D014463:Ultrasonography; D014867:Water / Q000008:administration & dosage
chemical_list: D014867:Water