Near-infrared fluorescence sentinel lymph node detection in gastric cancer: A pilot study

Table 1 Patient and tumor characteristics

Characteristic	Median	Range
Age (yr)	64	30-82
Tumor size (mm)	35	10-90
	N (n = 26)
Gender
M	19	73%
F	7	27%
Tumor location
Cardia	8	31%
Corpus	6	23%
Antrum	12	46%
Tumor pT stage
pTx	2	8%
pT1	5	19%
pT2	5	19%
pT3	10	39%
pT4	4	15%
Type of resection
Total gastrectomy	11	42%
Partial gastrectomy	14	54%
No resection	1	4%
Preoperative CTx	23	88%

Table 2 Characteristics of detected sentinel lymph nodes

PatientNo.	T stage	Tumorlocation	Pre-operativeCTx	Number of detected SLNs	Location of detected SLNs by LN St	Mean SBRof SLNs	Tumorstatus inSLNs	SLNIdentificationaccurate?	SLN outsideStandarddissection plane?
1	1	M	No	3	3	5.4	Neg	Yes	No
2	4	M	Yes	3	3; 3 and 6	1.9	Pos	No	No
3	4	D	Yes	No tracer injected because of metastasized disease
4	1	D	Yes	3	4; 6 and 6	4.3	Neg	Yes	No
5	2	U	Yes	4	3; 3; 4 and 4	3.9	Neg	Yes	No
6	3	M	Yes	3	4; 4 and 7	5.3	Neg	Yes	No
7	1	M	No	4	3; 3; 6 and 6	3.1	Neg	Yes	No
8	2	U	Yes	Technical failure of tracer administration
9	3	U	Yes	2	1 and 1	8.7	Neg	Yes	No
10	3	D	No	3	6; 6 and 12	4.7	Pos	No	Yes
11	3	D	Yes	4	5; 6; 6 and 12	4.9	Pos	Yes	Yes
12	4	U	Yes	No tracer injected because of metastasized disease
13	2	U	Yes	3	1; 7 and 9	3.5	Neg	Yes	No
14	2	D	Yes	4	6 and 12	5.1	Pos	Yes	Yes
15	2	M	Yes	0	NA	NA	NA	NA	No
16	4	M	Yes	No tracer injected because of metastasized disease
17	3	U	Yes	2	8 and 12	2.6	Neg	Yes	Yes
18	3	D	Yes	2	5 and 6	11.4	Neg	Yes	No
19	x	D	Yes	2	3 and 3	3.6	Neg	Yes	No
20	x	D	Yes	2	3 and 14	3.6	Neg	Yes	Yes
21	3	M	Yes	5	3; 3; outside standard planes of 9 (3x)	2.8	Pos	Yes	Yes
22	3	D	Yes	4	3; 6; 6 and 14	3.1	Pos	Yes	Yes
23	3	U	Yes	1	1	6.2	Pos	Yes	No
24	3	D	Yes	6	3; 3; 6; 6; 6 and 11	4.0	Pos	Yes	Yes
25	1	D	Yes	4	3; 3; 4 and 6	4.6	Neg	Yes	No
26	1	D	Yes	4	5; 6; 6 and 6	5.6	Neg	Yes	No

CTx: Chemotherapy; D: Antrum of stomach; LN: Lymph node; M: Corpus of stomach; NA: Not Applicable; SBR: Signal-to-background ratio; SLN: Sentinel lymph node; St: Lymph node station according to Japanese Research Society for the Study of Gastric Cancer; U: Cardia of stomach.