Telecytology versus in-room cytopathologist for EUS-guided FNA or fine-needle biopsy sampling of solid pancreatic lesions.

Background And Aims: Rapid on-site-evaluation (ROSE) with an in-room cytopathologist (ROSE-P) has been shown to improve the diagnostic yield of specimens obtained from patients undergoing EUS-guided FNA or fine-needle biopsy sampling (EUS-FNAB) of pancreatic lesions. Recently, there has been an increased interest and use of ROSE using telecytology (ROSE-T) to optimize clinical workflows and to address social distancing mandates created during the coronavirus disease 2019 pandemic. The purpose of this study was to compare diagnostic outcomes of ROSE-P and ROSE-T.

Methods: A single-center cohort study of patients who underwent EUS-FNAB of solid pancreatic lesions with ROSE was conducted. The primary outcome was overall diagnostic yield of cancer. All patients who underwent EUS-FNAB were entered into a prospectively maintained database. Statistical analyses were performed using descriptive statistics and univariate analysis.

Results: There were 165 patients in each arm. There was no difference in diagnostic yield between ROSE-P and ROSE-T (96.4% vs 94.5%, P = .428). ROSE-T was associated with an increased use of 22-gauge needles (P = .006) and more needle passes (P < .001). No significant differences were found in age, gender, lesion size, needle type, procedure times, or adverse events between the 2 groups (P < .05 for all). More pancreatic tail lesions were sampled in the ROSE-P group (P < .001).

Conclusions: ROSE-T was not associated with any difference in final histologic diagnosis for EUS-FNAB of solid pancreatic masses. This has important implications for optimizing clinical workflows.