Figure 3.

Examples for VI-RADS scoring using our algorithm. (a) A 70-year-old male with a posterior bladder wall lesion. Following our algorithm, an interruption of low SI line which was not identified, the tumor size was 2 cm, and a stalk was identified thus classifying this lesion as a VI-RADS 2. Pathological analysis revealed a high-grade papillary urothelial carcinoma with no carcinoma in situ associated. (b) A 79-year-old male with prior history of NMIBC. Following our algorithm, an interruption of low SI line was identified, with extension to extravesical fat classifying this lesion as a VI-RADS 5. Pathological analysis revealed a muscle-invasive high-grade urothelial carcinoma.

NMIBC, non-muscle invasive bladder cancer; SI, sacroiliac; VI-RADS, vesical imaging-reporting and data systems.