Fig. 17

Cystectomy specimen from a patient who underwent neoadjuvant chemotherapy: residual disease only in foci of lymphovascular invasion or at the perivesical adipose tissue. It is important to exam multiple sections of the whole thickness of the bladder wall in a cystectomy specimen from a patient who underwent neoadjuvant chemotherapy. It is not rare to see tumor only in foci of lymphovascular invasion (A) or at the perivesical adipose tissue (B), with no tumor present at the mucosal surface or lamina propria