Feasibility and oncological outcomes of laparoscopic rectal resection following neo-adjuvant chemo-radiotherapy: A systematic review

Table 9 Quality markers

Ref.	CRM positivity		Lymph node harvest1
	Lap	Open	Lap	Open
Kang et al[9]	2.9%	4.1%	17 (12-22)	18 (13-24)
3Kusano et al[11]	NR	NR	< 12 = 73.7% > 12 = 26.3%	< 12 = 64.3% > 12 = 35.7%
Hu et al[14]	1.9%	3.5%	12 (2-20)	11 (1-25)
4Seshadri et al[12]	1.3%	9.7%	7 (1-24)	7 (1-25)
Denoya et al[15]	Yes5	Yes5	19 ± 92	19 ± 92
Denost et al[10]	NR	NA	NR	NA
6Motson et al[7]	Yes6	NA	5 (0-14)	NA

¹Lymph node harvest reported as median (range) except

²where it is mean and

³where it is percent of patients with node count < or > 12;

⁴Authors define CRM as 2 mm; ³Authors report negative “radical” resection margins in all patients in discussion;

⁵CRM reported as Lap 1.17 ± 0.7; Open 0.96 ± 0.5;

⁶CRM reported as 5.5 mm (< 1-15 mm). NR: Not reported; NA: Not applicable; CRM: Circumferential resection margins.