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Subject Area

Pathology

Article Type

Original Study

Abstract

Background: The Papanicolaou Society of Cytopathology (PSC) Reporting System presented a six-category classification system to stereotype the pathological clarification of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) samples. This study aimed to evaluate the accurateness of the PSC system in interpreting and reporting EUS-FNA of pancreatic lesions. Methods: A retrospective study with inter-observer analysis was performed on cytological samples got from patients who experienced EUS-FNA for pancreatic lesions from January 2018 to December 2022. Smears were observed by pathologists who were blinded to the final radiologic and pathologic data, applied the criteria of PSC System. Statistical examination was performed. Results: The study included smears from 100 cases who underwent EUS-FNA/B for pancreatic lesions as cysts and masses. Eleven samples were classified as nondiagnostic, 13 samples as non-malignant (category II, III and IVB) and 76 smears as malignant (category IVO and above). In comparison to the final clinico-radiological or pathological diagnosis, the diagnostic accurateness of the PSC classification was 96.8%, with a sensitivity of 90.4%, specificity of 83.3%, positive predictive value of 100%, and negative predictive value of 83.3%. Conclusions: The PSC reporting system suggestions a dependable and accurate outline for interpreting EUS-FNA smears of pancreatic diseases, certifying standardized reporting and supporting clinical decision-making.

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Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

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