Table 3: Median RNA (range) from 18- versus 20-gauge needle samples from normal and tumor tissues obtained from the kidney, lung, and liver.

18G biopsy (ng RNA)20G biopsy (ng RNA) value (18G vs. 20G)

Any organ
 Normal510 (30, 23540)240 (30, 7090)<0.001
 Tumor1100 (110, 17210)230 (60, 5210)<0.001a
Kidney
 Normal480 (230, 1210)270 (110, 460)<0.001
 Tumor510 (220, 3420)290 (70, 2480)<0.001
value (normal vs. tumor)0.8550.217
Lung
 Normal150 (30, 4940)120 (30, 400)0.008
 Tumor2870 (170, 12700)290 (70, 2480)<0.001
value (normal vs. tumor)<0.001<0.001
Liver
 Normal4740 (60, 23540)700 (60, 7090)<0.001
 Tumor1190 (110, 17210)150 (60, 5210)<0.001
value (normal vs. tumor)0.0120.002

aExact test could not be performed due to ties, normal approximation used.