Table 1: Agreement between pretreatment three-dimentional ultrasound and definitive pathologic tumor categories after resection in 18 patients with rectal cancer without indication for chemoradiation.

Pathologic analysis
pT0pT1pT2pT3Total
Pretreatment 3D-US
uT0 12a 0 0 0 12
uT1 1b 2a 0 0 03
uT2 0 0 1a 0 01
uT3 0 0 0 2a 02
Total 13 2 1 2 18

3D-US: three-dimensional ultrasound; uT = preoperative ultrasonographic staging; pT = definitive pathologic staging.
aConcordant findings; bOverstaging with 3D-US.