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穿刺部位及诊断率

Mediastinal lymph node stations and diagnosis accuracy by stations

Lymph node stations	Lymph node number	Needle passes/Median	Lung cancer	Fasle negative	Accuracy (%)
N2	7/2%	14/2.00	5	1	86
N4	124/30%	243/1.96	73	4	97
N5	5/1%	10/2.00	4	1	80
N7	184/44%	390/2.12	82	15	92
N10	42/10%	91/2.17	21	1	98
N11	31/7%	58/1.87	18	2	94
Mediastinal mass	27/6%	62/2.30	15	5	81
Total	420	868/2.07	218	30	93