Figure 1 (A) Low magnification of gastrocystoplasty showing both the urothelial (black arrow) and gastric mucosa (white arrow). Haematoxylin and eosin, original magnification ×20. Inset: Low‐grade dysplasia arising in the gastric mucosa. Haematoxylin and eosin, original magnification ×100. (B,C) High‐grade dysplasia and intramucosal adenocarcinoma arising in the gastric mucosa. Haematoxylin and eosin, original magnification ×200. (D) Invasive adenocarcinoma infiltrates the gastric mucosa and muscularis propria of the neobladder. Haematoxylin and eosin, original magnification ×40.