TY - JOUR
T1 - The usefulness of endoscopic ultrasound-guided fine-needle aspiration for the diagnosis of pancreatic neuroendocrine tumors based on the World Health Organization classification
AU - Unno, Jun
AU - Kanno, Atsushi
AU - Masamune, Atsushi
AU - Kasajima, Atsuko
AU - Fujishima, Fumiyoshi
AU - Ishida, Kazuyuki
AU - Hamada, Shin
AU - Kume, Kiyoshi
AU - Kikuta, Kazuhiro
AU - Hirota, Morihisa
AU - Motoi, Fuyuhiko
AU - Unno, Michiaki
AU - Shimosegawa, Tooru
PY - 2014/11/1
Y1 - 2014/11/1
N2 - BACKGROUND: We assessed the controversial topic of using 22-gauge needles in endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) for the diagnosis and evaluation of Ki67 labeling indices (Ki67LI) of pancreatic neuroendocrine tumors (pNET).METHODS: Thirty-eight patients with pNET who underwent EUS-FNA between January 1, 2008 and December 31, 2012 were enrolled in this study. When available, the Ki67LI and WHO classifications obtained by EUS-FNA and surgical resection were compared.RESULTS: EUS-FNA with a 22-gauge needle acquired sufficient histological sample to correctly diagnose pNET in 35 cases (92.1%). Both EUS-FNA and surgical histological specimens were available for 19 cases, and grading classes of the 2 procedures were consistent in 17 cases (89.5%) according to the WHO classification based on the Ki67LI. Tumor size was associated with a difference in the Ki67LI between the 2 procedures, although the Ki67LI was almost completely consistent for tumors less than 18 mm in size.CONCLUSIONS: EUS-FNA with a 22-gauge needle is a safe and highly accurate technique for the diagnosis of pNET. There was a clear correlation between the Ki67LI of histological specimens acquired by EUS-FNA and surgery. EUS-FNA with a 22-gauge needle is useful to predict the WHO classification of pNET.
AB - BACKGROUND: We assessed the controversial topic of using 22-gauge needles in endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) for the diagnosis and evaluation of Ki67 labeling indices (Ki67LI) of pancreatic neuroendocrine tumors (pNET).METHODS: Thirty-eight patients with pNET who underwent EUS-FNA between January 1, 2008 and December 31, 2012 were enrolled in this study. When available, the Ki67LI and WHO classifications obtained by EUS-FNA and surgical resection were compared.RESULTS: EUS-FNA with a 22-gauge needle acquired sufficient histological sample to correctly diagnose pNET in 35 cases (92.1%). Both EUS-FNA and surgical histological specimens were available for 19 cases, and grading classes of the 2 procedures were consistent in 17 cases (89.5%) according to the WHO classification based on the Ki67LI. Tumor size was associated with a difference in the Ki67LI between the 2 procedures, although the Ki67LI was almost completely consistent for tumors less than 18 mm in size.CONCLUSIONS: EUS-FNA with a 22-gauge needle is a safe and highly accurate technique for the diagnosis of pNET. There was a clear correlation between the Ki67LI of histological specimens acquired by EUS-FNA and surgery. EUS-FNA with a 22-gauge needle is useful to predict the WHO classification of pNET.
KW - Ki67
KW - endoscopic ultrasonography
KW - endoscopic ultrasound-guided fine needle aspiration
KW - pancreatic neuroendocrine tumors
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U2 - 10.3109/00365521.2014.934909
DO - 10.3109/00365521.2014.934909
M3 - Article
C2 - 25180490
AN - SCOPUS:84936998176
VL - 49
SP - 1367
EP - 1374
JO - Scandinavian Journal of Gastroenterology
JF - Scandinavian Journal of Gastroenterology
SN - 0036-5521
IS - 11
ER -