Table 2. The quality of mesorectum excision according to Procare criteria (17).

The quality of mesorectum excision in TME samples proposed by the PROCARE guide. Samplesand whole (fresh) and transverse cross-sections (after fixation) should be examined to adequately evaluate mesorectum excision.
Smooth, regular	Intact mesorectum with only minor irregularities on a smooth mesorectum surface No defects deeper than 5 mm There is no cone at the distal margin of the sample Smooth circumferential resection limit on the incision
Slightly irregular	Moderate volume of mesorectum, but irregularity of the mesorectumsurface Moderate coning of the sample Muscular propira is not visible atall places, with the exception of the levator insertion
Very irregular	A small volume of mesorectum with defects down to muscularis propria and/or very irregular circumferentialresection margin on the incision