Fig. 2
From: Current laser application in En bloc resection of bladder tumor- a narrative literature review

(A): overall view of the bladder tumor. (B): procedure of thulium laser ERBT: circumferential incision 5–10 mm away from the tumor base. (C): procedure of thulium laser ERBT: resection proceeding to the deep muscle layer. (D): procedure of thulium laser ERBT: en bloc resection almost finished