Malignant tumor exhibiting a papillary architecture lined by multilayered neoplastic urothelium with low-grade cytologic atypia. Nests of tumor cells are seen invading lamina propria. Bundles of muscularis propria (detrusor muscle) are present within the sampled tissue and are completely uninvolved by the tumor. No evidence of lymphovascular or perineural invasion.
Urinary bladder mass.
Soft tissue fragments collectively measured 4.3x3.5x0.5 cm, totally embedded.
Urinary bladder mass, TURB: