Table 1.

MRI criteria for “good prognosis” rectal cancer tumors eligible for primary surgery.

	United Kingdom (Mercury)	German
Predicted CRM	CRM > 1 mm	CRM > 1 mm
Ta-category and EMDb	T1, T2, or T3 with ≤ 5 mm EMDb	T1, T2, or any T3
Nc-category	N0, N1, N2	N0, N1, N2
EMVId	EMVId negative	Not assessed
Tumor height	Tumors 5 to 15 cm from the anal verge Tumors < 5 cm from anal verge with no invasion of the intersphincteric plane	Tumors 6 to 12 cm from the anal verge

^a T=primary tumor

^b EMD = extramural depth of invasion

^c N=regional lymph nodes

^d EMVI = extramural venous invasion