COMPARATIVE STUDY
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

Endoscopic ultrasound-guided fine needle aspiration with 22- and 25-gauge needles in solid pancreatic masses: a prospective comparative study with randomisation of needle sequence

Carlo Fabbri, Anna Maria Polifemo, Carmelo Luigiano, Vincenzo Cennamo, Paola Baccarini, Guido Collina, Adele Fornelli, Sandro Macchia, Nicola Zanini, Elio Jovine, Marta Fiscaletti, Angela Alibrandi, Nicola D'Imperio
Digestive and Liver Disease 2011, 43 (8): 647-52
21592873

BACKGROUND: The difference in the diagnostic accuracy of 22- versus 25-gauge needles in EUS-FNA is not clear.

AIMS: To compare the rates of technical success, diagnostic accuracy and complications of EUS-FNA performed with 22-gauge and 25-gauge needles on the same solid pancreatic mass.

METHODS: All patients with solid pancreatic masses evaluated from September 2007 to December 2008 were enrolled and underwent EUS-FNA with both 22- and 25-gauge needles with randomisation of needle sequence. The accuracy of the EUS-FNA was determined by comparing the cytological results with the final surgical pathological diagnoses or with the results of a clinical follow-up. A cytological score with different qualitative parameters was created, and a comparison between these parameters was carried out for each needle.

RESULTS: Fifty patients with 50 pancreatic masses were recruited. Technical success was 100% and no complications occurred. Diagnostic accuracy was 94% and 86% for the 25- and 22-gauge needles, respectively. Analysis of the cytological score showed a tendency towards the 25-gauge needle, although the difference was not statistically significant.

CONCLUSIONS: EUS-FNA performed with 22- or 25-gauge needles had the same diagnostic accuracy. Our study results confirm a significant trend towards a better cytological diagnosis for the 25-gauge needle.

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