title: Intraoperative ultrasonography in detecting and assessment of colorectal liver metastases.
abstract: OBJECTIVE
  to assess the clinical value of intraoperative ultrasonography (IOUS) in detecting and assessment of liver metastatic tumours in colorectal cancer patients.
  
  
  METHODS
  a study is a retrospective analysis of 388 patients operated on for colorectal carcinoma between 1997 and 2004. In all the patients intraoperative ultrasound was performed. The authors analyzed of sensitivity, specificity, PPV, NPV and accuracy of pre- and intraoperative ultrasonography in detecting and staging of colorectal metastatic lesions.
  
  
  RESULTS
  Intraoperative ultrasonography showed the highest sensitivity, specificity and accuracy in both, tumor detection (99.1, 98.5 and 98.9%, respectively) and assessment (95.4, 99.5 and 99.1%, respectively). Overall sensitivity of IOUS was significantly better in detection and staging compared with preoperative ultrasonography 91.1 and 72.2%, respectively).
  
  
  CONCLUSIONS
  IOUS should be used as routine diagnostic modality in colorectal cancer patients with hepatic metastases or suspected metastases. Transabdominal ultrasonography cannot be used as the only diagnostic tool in the evaluation of liver lesions, but may be helpful in preoperative screening.
authors.affiliation: First Department of General Surgery, Collegium Medicum Jagiellonian University, Cracow, Poland. mskulig@cyf-kr.edu.pl
authors.forename: J
authors.initials: J
authors.lastname: Kulig
authors.forename: T
authors.initials: T
authors.lastname: Popiela
authors.forename: S
authors.initials: S
authors.lastname: Kłek
authors.forename: W
authors.initials: W
authors.lastname: Milanowski
authors.forename: P
authors.initials: P
authors.lastname: Kołodziejczyk
authors.forename: P
authors.initials: P
authors.lastname: Szybiński
authors.forename: P
authors.initials: P
authors.lastname: Richter
mesh_terms: D002277:Carcinoma / Q000000981:diagnostic imaging* / Q000556:secondary / Q000601:surgery; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods*; D009362:Neoplasm Metastasis / Q000000981:diagnostic imaging; D009367:Neoplasm Staging / Q000379:methods; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D018615:Ultrasonography, Doppler, Color