Fig. 3From: Robot-assisted total pelvic exenteration for rectal cancer after neoadjuvant chemoradiotherapy: a case reportSlices of the resected specimen fixed in formalin. a Boundary line between the rectum and prostate was unclear because of tumor cell infiltration. b Mapping of viable tumor cells is shown as the area in red. The depth was diagnosed as ypT4b (prostate), and the resection margin was 2.5 mmBack to article page