Objective • To evaluate whether DW-MRI improves the detection of pelvic lymph nodes metastates in patients with bladder cancer undergoing radical cystectomy. Patients and Methods • 36 patients with CT scan negative for nodal metastates underwent DW-MRI before surgery. Diagnostic accuracy of DW-MRI was compared with histopathological findings. Results • Mean ADC value was 0.85 × 10 -3 mm 3/s in the nodal metastatic group and 1 × 10 -3 mm 3/s in the nodal non-metastatic group (P = 0.02). • The ADC cut-off value, obtained by the ROC curve was 0.86 × 10 -3 mm 3/s. • Patient-based sensitivity, specificity and positive and negative predictive values were 76.4%, 89.4%, 26.6%, and 71.4%, respectively. Conclusions • DW-MRI may be used to differentiate metastatic from non-metastatic lymph nodes in patients with high-grade bladder cancer.
- bladder cancer
- diffusion weighted MRI
- extended pelvic lymphadenectomy
- lymph node metastasis
ASJC Scopus subject areas