Efficacy of endoscopic ultrasonography-guided fine needle aspiration for pancreatic neuroendocrine tumor grading

Table 1 Comparison of specimens obtained by endoscopic ultrasonography-guided fine needle aspiration and surgery

	Sex	Age (yr)	Size (mm)	Location of tumor	No. of needle passes	Needle (G)	EUS-FNA specimen		Surgery specimen
							Ki-67 index	Grade	Ki-67 index	Mitotic count (/10HPF)	Grade
1	M	71	4.4	Tail	5	19	< 2.0%	G1	< 2.0%	0	G1
2	F	79	19	Head	4	22	0.8%	G1	< 2.0%	0	G1
3	M	44	31	Head	2	22	1.8%	G1	0.1%	0	G1
4	F	51	10	Body	3	22	0.4%	G1	1.97%	0	G1
5	M	75	40	Tail	3	22	7.0%	G2	7.13%	2	G2
6	M	49	31	Body	3	22	4.54%	G2	< 20%	11	G2
7	F	46	30	Head	3	22, 25	< 2.0%	G1	7.5%	15	G2
8	M	55	40	Head	2	25	1.8%	G1	< 1.0%	0	G1

Tumor grades were concordant between specimens of EUS-FNA and those obtained by operation, except in case no. 7. The concordance rate between specimens of EUS-FNA and surgery was 87.5% (7/8). M: Male; F: Female; EUS-FNA: Endoscopic ultrasonography-guided fine needle aspiration.