Author of

• 13580

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  P1.04 - Poster Session/ Biology, Pathology, and Molecular Testing (ID 233)

  • Event: WCLC 2015
  • Type: Poster
  • Track: Biology, Pathology, and Molecular Testing
  • Presentations: 1
  • Moderators:
  • Coordinates: 9/07/2015, 09:30 - 17:00, Exhibit Hall (Hall B+C)

  • 13618

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    P1.04-038 - Endobronchial Ultrasound Guided Transbronchial Fine Needle Aspiration Cytology (EBUS-TBNA) for Peribronchial Mediastinal Tumor (ID 982)

    09:30 - 09:30  |  Author(s): T. Toyoda
    • Abstract
    • Slides

    Background:
    Recently endobronchial ultrasound guided transbronchial needle aspiration system (EBUS-TBNA) was developed in Japan and probed to be an effective method to diagnose peribronchial tree lesions especially for lymphnode metastasis of lung cancer.　In this time, we present our experience of EBUS-TBNA for peritracheal mediastinal tumors and discuss current advances of EBUS-TBNA for lung peri-tracheobronchial lesions.
    
    Methods:
    Between 2008 and 2014, EBUS-TBNA was performed in nine patients with peritracheal mediastinal mass to diagnose them morphologically.
    
    Results:
    Final histological type of these nine cases were, 6 malignant tumors (two malignant lymphomas, one multiple myeloma, one thyroid carcinoma, one squamous cell carcinoma, one large cell carcinoma) and 3 benign tumors (one neurogenic schwanoma, one bronchogenic cyst and one thymic cyst). Of the detected 6 malignant tumors, cytology diagnoses were positive in three cases, suspicious in two cases and inadequate in one case. Of the detected three benign tumors, cytology diagnoses were benign in two cases and inadequate in one case. Among 7 solid mediastinal tumors, histological evaluation was capable in 3 cases and insufficient in 4 cases. Combined with cytological and histological examination, morphological diagnoses were useful in 6 cases (67%) with EBUS-TBNA for peritracheal mediastinal tumors.
    
    Conclusion:
    Although histological type of peri-trachal mediastinal tumor was various, morphological diagnosis with EBUS-TBNA was useful in 67% of the lesions in this series. Analysis of atypical cells in the cytology specimen was effective to estimate the histological figures of the lesions.
    
    

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