FDG is excreted by the kidneys, and activity obscures evaluation of the upper and lower urinary tract for recurrent disease. MRI Abdomen and Pelvis In patients with NMIBC without risk factors or symptoms, screening for distant metastatic disease with cross- sectional imaging is not supported. There has been increasing interest in using MRI for local staging of bladder cancer in the pretreatment setting [24- 28]. However, progression to MIBC in this patient population is rare. MRI has been used to evaluate the urinary bladder following transurethral resection of bladder tumor (TURBT). In a study including 47 patients with recurrent bladder cancer, MRI demonstrated a sensitivity of 67% and 73% and a specificity of 81% and 62% for 2 readers, respectively, and false-negatives included low-grade Ta lesions [29]. In another study, diffusion-weighted imaging (DWI) had a sensitivity of 100% and specificity of 81.8% for recurrent tumor in 11 patients [30]. Despite these results, there is limited data for using MRI as a screening test in patients with previously treated bladder cancer. At this time, it is generally felt that urine cytological evaluation and conventional cystoscopy are sufficiently accurate for the diagnosis of bladder recurrence in this patient population. MRU MRU can be used as a primary imaging test for comprehensive evaluation of the genitourinary tract that can be used to identify metastatic disease and metachronous UC. Currently, evaluation for metastatic disease and routine surveillance of the upper urinary tract in asymptomatic, low-risk patients is not supported. Although MRU has been shown to have a sensitivity of 63% and specificity of 91% in a small study of 35 patients with suspected UTUC, the incidence of UTUC in this patient population is only between 0.6% and 0.9% [19,20,31]. Radiography Chest Chest radiography is generally not appropriate for patients with NMIBC without symptoms or risk factors.
Post Treatment Surveillance of Bladder Cancer. FDG is excreted by the kidneys, and activity obscures evaluation of the upper and lower urinary tract for recurrent disease. MRI Abdomen and Pelvis In patients with NMIBC without risk factors or symptoms, screening for distant metastatic disease with cross- sectional imaging is not supported. There has been increasing interest in using MRI for local staging of bladder cancer in the pretreatment setting [24- 28]. However, progression to MIBC in this patient population is rare. MRI has been used to evaluate the urinary bladder following transurethral resection of bladder tumor (TURBT). In a study including 47 patients with recurrent bladder cancer, MRI demonstrated a sensitivity of 67% and 73% and a specificity of 81% and 62% for 2 readers, respectively, and false-negatives included low-grade Ta lesions [29]. In another study, diffusion-weighted imaging (DWI) had a sensitivity of 100% and specificity of 81.8% for recurrent tumor in 11 patients [30]. Despite these results, there is limited data for using MRI as a screening test in patients with previously treated bladder cancer. At this time, it is generally felt that urine cytological evaluation and conventional cystoscopy are sufficiently accurate for the diagnosis of bladder recurrence in this patient population. MRU MRU can be used as a primary imaging test for comprehensive evaluation of the genitourinary tract that can be used to identify metastatic disease and metachronous UC. Currently, evaluation for metastatic disease and routine surveillance of the upper urinary tract in asymptomatic, low-risk patients is not supported. Although MRU has been shown to have a sensitivity of 63% and specificity of 91% in a small study of 35 patients with suspected UTUC, the incidence of UTUC in this patient population is only between 0.6% and 0.9% [19,20,31]. Radiography Chest Chest radiography is generally not appropriate for patients with NMIBC without symptoms or risk factors.