Table 1.

Patient characteristics

		Retrospective	Prospective
n		69	39
Age (yr), median (range)		71.3 (54-88)	72 (42-89)
Sex	Male	48	26
	Female	21	13
Depth of invasion	pT2 (MP)	12	8
	pT3 (SS)	14	14
	pT4 (SE·SI)	43	17
Type of gastrectomy	Distal	42	25
	Total	18	11
	Others	9	3
Lymph node dissection	Limited (D0·D1)	23	12
	Standard (D1+·D2)	42	25
	Extended (D2+)	4	2
No. of lymph nodes	Detected on CT	596	301
	Harvested	2913	1328
Cases with a pathological metastasis		53	28
No. of nodes involved in the pathological metastasis		630	171