Salvatore Paiella et al. Endoscopic ultrasound-guided fine-needle aspiration for the
diagnosis and grading of pancreatic neuroendocrine tumors: a retrospective analysis
of 110 cases
Specimens obtained by endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA)
from pancreatic neuroendocrine tumors in 110 patients were adequate for grading in
70 % of cases (> 2000 cells for Ki-67 index determination). When compared with histology
from the surgical specimens in 77 patients, EUS-FNA grading was correct in 82 %, and
under- and overgrading were seen in 16 % and 3 % of cases, respectively.
