TABLE 1

Preoperative, Intraoperative, and Pathologic Findings

Parameter	Tumor tattooing	Standard SN procedure	P
Mean administered dose (MBq) ± SD	100.0 ± 34.8 (median, 95.9)	78.7 ± 7.3 (median, 79.0)	0.059
Preoperative SN-related hot spots (n)
Lymphoscintigraphy	34 (median per patient, 2)	50 (median per patient, 2)	0.674
SPECT/CT	34 (median per patient, 2)	52 (median per patient, 3)	0.836
Mean intraoperative SN results
Fluorescent, in vivo	4.0 (median, 3)	2.7 (median, 2.5)	0.192
Fluorescent, ex vivo	3.8 (median, 3.5)	3.2 (median, 3)	0.365
Radioactive, in vivo	2.9 (median, 3)	2.7 (median, 2.5)	0.745
Radioactive, ex vivo	4.0 (median, 4)	3.0 (median, 3)	0.159
Total excised SNs (n)	54 (mean, 4.5; median, 4)	60 (mean, 3.2; median, 3)	0.090
Total excised non-SNs (n)	11 (mean, 0.9; median, 0.5)	9 (mean, 0.5; median, 0)	0.215
Total excised nodes (n)	65	69
Pathology (n)
SNs	84	83	0.072
Non-SNs	32	7	0.306
Total nodes	116	90	0.060
Tumor-positive SNs	5 (in 3 patients)	5 (in 4 patients)
Tumor-positive non-SNs	1^* (in 1 patient)	0
Tumor-positive nodes	6 (in 3 patients)	5 (in 4 patients)
Resection status (n)
R0	11 (91.7%)	19 (100.0%)
R1	1 (8.3%)	0