Garza-Guajardo R, Garza-Galindo AA, Flores-Gutiérrez JP, Áncer RJ, Barboza-Quintana O

Language: Spanish
References: 0
Page: 193-197
PDF size: 151.24 Kb.

ABSTRACT

Introduction: Fine needle aspiration biopsy (FNAB) by endoscopic ultrasound (EUS) is a new useful tool in the approach to classify the gastrointestinal tract, pancreas and mediastinal lesions. Objective: Determine diagnostic accuracy of FNAB guide by endoscopic ultrasound in our institution. Material and Methods: We study 77 patients with EUS in a 28 months period. Preliminary evaluation of cytological material was due by a cytopathologist in the endoscopic room. Results: Sixty patients (77.9%) have clinical follow-up; 41 cases were from pancreas (68.3%), 2 lymph node (3.3%), 2 duodenal (3.3%), 1 from liver (1.8%) and 1 cytology from ascitis (1.8%). Cytologycal diagnosis were classify as follows: 68.3% malignant, suspicious of malignancy (8.3%), benign (16.6%) and inadequate for diagnosis (6.6%). Clinical follow-up or confirmatory biopsy correlation in a benign and malignant lesions was 100%; 80% of suspicious lesions were malignant. The sensitivity was of 100% and the specificity of 91%. Conclusions: FNAB guide by EUS is a method with a high diagnostic accuracy, useful in the approach of deep organs lesions; the evaluation of the cytologic material by a pathologist or cytopathologist in the endoscopic room is critical for the success of the procedure.