Pancreatic neuroendocrine tumour grading on endoscopic ultrasound‐guided fine needle aspiration: high reproducibility and inter‐observer agreement of the <scp>K</scp>i‐67 labelling index

Abstract

This study attests the reproducibility of Ki67-LI of pNETs whether counted on cytology or histology with a very good inter-observer correlation. Determination of Ki67-LI on EUS-FNA of pNETs should be included systematically in their prognostic work-up.