Fig. 18
From: Radiology–pathology correlation of endometrial carcinoma assessment on magnetic resonance imaging
Stage IVA endometrial carcinoma. Sagittal T2W MR images (a) show direct tumour extension into the bladder mucosa (arrow). The air anteriorly in the bladder is due to a fistula. Chips of a bladder tumour (b, H&E stain, × 4 magnification) initially thought to be primary urothelial tumour show fragments of necrotic endometrioid adenocarcinoma (arrow) confirmed on immunohistochemistry. The normal bladder transitional epithelium is indicated by the arrowheads