Ultraschall Med 2007; 28 - V_3_2
DOI: 10.1055/s-2007-988913

Transrectal ultrasound (TRUS) and MRI in staging of early cervical cancer

D Fischerova 1, D Cibula 1, M Zikan 1, P Calda 1, H Vondrichova 2, H Stenhova 2
  • 1General Faculty Hospital of Charles University, Oncogynecological Center, Department of Obstetrics and Gynecology, Prague, Czech Republic
  • 2Diagnostic Center Mediscan, Prague, Czech Republic

Objective: To determine accuracy of transrectal ultrasound (TRUS) in comparison to MRI in the evaluation of tumor volume, early parametrial infiltration and identification of residual tumor in early stages cervical cancer.

Methods: Patients assessed by clinical examination as having early stages cervical cancer were prospectively enrolled to the study. Only patients who were examined by both MRI and TRUS with following surgical treatment were included. Results of imaging modalities were correlated with pathologic findings.

Results: 95 patients examined by TRUS were prospectively enrolled from January 2004 till February 2006. Only data from 53 patients examined by both MRI and TRUS were evaluated. The accuracy for detecting tumor in 53 patients was 88.7% for TRUS, while 69.8% for MRI (P=0.00635). In small tumors (≤1cm3), accuracy for tumor detection by TRUS was 86.8%, while 66.0% by MRI (P=0.00739). Accuracy for parametrial infiltration detected by TRUS was 98.95%, for MRI 90.6% respectively (P=NS). The accuracy was not influenced by body mass index (BMI) of patients.

Conclusion: Our results showed comparable accuracy of transrectal ultrasound with commonly used MRI in staging of early stages cervical cancer. TRUS and pathologic derived volumes correlated tightly; accuracy of TRUS were comparable or even better in all evaluated parameters, including detection of residual tumors or incipient parametrial infiltration.