Role of endoscopic ultrasonography in the loco-regional staging of patients with rectal cancer

Table 7 Accuracy of endoscopic ultrasound in staging locally advanced rectal cancer after chemo-radiation

Ref.	Year	No.	T	Mistakes		N
				Over	Under
Vanagunas et al[90]	2004	82	48%	38%	14%	77%
Mao et al[92]	2006	25	72%	8%	12%	80%
Radovaanovic et al[94]	2008	44	75%	18%	7%	68%
Marone et al[91]	2011	85	61%	28%	7%	59%
Mean		236	64%	23%	10%	71%
Range			48%-75%	8%-38%	7%-14%	59%-80%

uTN stage compared with pTN stage; Previous neoadjuvant therapy (NAT). Over: Overstaging; Under: Understaging.