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Endoscopia
versão On-line ISSN 2444-6483versão impressa ISSN 0188-9893
Resumo
HERNANDEZ-LARA, Ariosto Honorio; ALONSO-LARRAGA, Juan Octavio; MORA-LEVY, José Guillermo de la e HERNANDEZ-GUERRERO, Angélica I.. Technical aspects of lymph node sampling by endoscopic ultrasound. Endoscopia [online]. 2019, vol.31, n.4, pp.140-146. Epub 01-Nov-2021. ISSN 2444-6483. https://doi.org/10.24875/end.19000025.
Introduction and objective:
The diagnostic and accuracy of fine needle aspiration biopsy assisted by endoscopic ultrasound (USE-FNAB) ranges between 68.4% and 84.3%, depending on several factors. The objective of this study is to demonstrate the safety, diagnostic performance and technical aspects involved in the adequacy of lymph node sampling by EUS-FNAB with emphasis on the use of suction.
Material and methods:
38 lymph node biopsies were taken and analyzed for all variables that could have an impact on the final adaptation of the samples. A descriptive analysis was made by means and percentages, and an inferential analysis by parametric and nonparametric tests depending on the distribution and type of variable considering a statistical significance of p < 0.05.
Results:
Material was obtained in 100% of the studies, although only 73.7% of samples were reported adequate for diagnosis during the rapid cytology analysis, the final diagnostic yield was 84.2% after the review of the cell block (p = 0.031). In our study, there was no impact on the suitability of the sample when comparing the use of suction (55.3%) versus no suction (44.7%) (p = 0.258).
Conclusions:
The final review of the cell block increases the diagnostic yield of USE-FNAB in lymph nodes.
Palavras-chave : Lymph node; Endoscopy; Biopsy; Endoscopic ultrasound; Diagnosis.