Objective: Image-guided fine needle aspiration cytology with conventional smear (CS) preparation offers onsite cellular adequacy evaluation; however, it still provides false negatives due to faulty smear preparations. Liquid-based cytology (LBC) can be advantageous in these scenarios. Hence, with an aim to investigate utility of LBC in these samples, we carried out the above study with objectives to find diagnostic accuracy of LBC and agreement of LBC with CS methods in guided aspiration samples from intra-abdominal masses. Methods: A prospective observational study, of 113 patients with clinical or radiological diagnosis of intra-abdominal masses, was carried out. SurePath BD™ was used for LBC smear preparation, and the standard protocol was used for CS preparation. Results: LBC alone was diagnostic in 80.8% of the cases, and CS alone was diagnostic in 71.2% cases (agreement was 83.7%, p = 0.03). Cellular morphology was better preserved in LBC; however, interpretation was easier in CS. Conclusion: CS may be complimented with LBC sample collection method to enhance the sensitivity of intra-abdominal FNA.

Keywords:
Guided aspiration cytology, Liquid-based cytology, Conventional cytology, Intra-abdominal masses
© 2022 S. Karger AG, Basel
2022
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