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Masahiko Aoki



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    P1.05 - Interventional Diagnostics/Pulmonology (Not CME Accredited Session) (ID 937)

    • Event: WCLC 2018
    • Type: Poster Viewing in the Exhibit Hall
    • Track:
    • Presentations: 1
    • Moderators:
    • Coordinates: 9/24/2018, 16:45 - 18:00, Exhibit Hall
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      P1.05-21 - CT-Guided Biopsy of Lung Lesions with Outer Cannula Washing Cytology (ID 12818)

      16:45 - 18:00  |  Author(s): Masahiko Aoki

      • Abstract
      • Slides

      Background

      Although several studies have reported the use of CT lung biopsy for histological diagnosis or aspiration cytology, only a few have reported on the simultaneous use of biopsy and cytodiagnosis. Our hospital has used an outer cannula washing solution cytology in conjunction with a biopsy.

      We examined the usefulness of outer cannula washing cytodiagnosis.

      a9ded1e5ce5d75814730bb4caaf49419 Method

      At our hospital, 37 patients (mean age, 68 [range, 33-84] years; 23 males and 14 females; 15 adenocarcinomas, 4 small cells, 3 SCC, 10 other cases, and 5 metastases) were diagnosed with pulmonary lesions between June 2016 and March 2018. While the inner needle was washed with formalin and submitted for tissue examination, the washing solution inside the outer cannula was submitted for cytodiagnosis.

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      4c3880bb027f159e801041b1021e88e8 Result

      In all 37 patients, we successfully performed the procedure without any serious complications. In 33 patients, we observed malignant findings in histopathology or cytodiagnosis. However, we obtained only cytological malignant findings in the three patients. Although one case was negative for histological diagnosis and cytological examination, it was malignant after that. Of note, remaining three other cases were benign. The sensitivity, specificity, and accuracy of the cutting-needle histological biopsy were 88.2%, 100%, and 89.2%, respectively; of washing cytology were 82.6%, 81.3%, and 81.8%, respectively; and of histology and cytology were 97.1%, 100%, and 97.3%, respectively. Although the accuracy was 89.2% only by the conventional tissue method, it was 97.3% when combined with cytodiagnosis (P=0.072).

      8eea62084ca7e541d918e823422bd82e Conclusion

      Washing cytology of the outer cannula could be beneficial in the biopsy.

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