ENDSCOPIC ULTRASOUND(EUS)GUIDED FINE NEEDLE ASPIRATION(FNA)CYTOLOGY FOR THE DIAGNOSISOF DIGESTIVE DISEASES(3RD REPORT)IN SPECIAL REFERENCE

TO THE EFLFICACY OLF NEW PUNCTURE SYSTEM LFOR PANCREATIC AND PERIPANCREATIC MLASS LESIONS

Abstract

EUS-guided FNA cytology was attemped in 44 paitients with pancreatic and peripancreatic tumors(19 were benign and the other 25 malignant). The rate of adequ-atespecimens by FNA aspiration was 86%. Malignant diseases were easier to obtain enoughmaterials for cytology than benign diseases. The predictive value of EUS-guided FNAcytology for malignancies in our series was as follows. The sensitivity was 79%, specificity 100%, true positive value 100%, true negative value 74%, overall accuracy rate 87%. Asfor the efficacy of cytological diagnosis, the new type of aspiration needle is superior to theold type of aspiration needle. No complications were encountered. In conclusion, EUS guided FNA cytology is an effective modality to enhance thespecificity of ELTS diagnosis. This modality also is becoming very advantageous for thetherapeutic purpose as well as the diagnostic purpose of pancreatic and peripancreatictumors.