Fig. 1

Magnetic resonance imaging (MRI), cystoscopic, and pathological findings of the representative case.  Fat-saturated T2-weighted images a before ADT, b just before carbon ion radiotherapy (CIRT), and c 2 years after CIRT. Cystoscopic findings d just before CIRT and e one and half a year after CIRT. f Hematoxylin-Eosin stain of biopsy sample from the bladder lesion 2 years after CIRT in a high-power field. There were no malignant cells