Table 1.

EUS-FNA by region and diagnostic accuracy.

Region	Frequency	FNA nondiagnostic or false negative	FNA diagnostic (%)
Pancreas	201	16	92.04
Abdominal lymph nodes	27	7	74.07
Stomach	20	0	100.00
Mediastinum	21	2	90.48
Esophagus	13	0	100.00
Liver	5	0	100.00
Duodenum	4	0	100.00
Adrenal	3	0	100.00
Ascites/other	4	1	75.00
Total	268	20	92.54

Various regions sampled by EUS-FNA cytology, showing frequency of FNA, number of false negatives or nondiagnostic samples, and overall diagnostic accuracy are displayed.

Total includes several cases of overlap in patients where multiple regions were sampled by FNA. For example, a patient had FNA biopsies taken from his pancreas and abdominal lymph nodes.