Author of

• 12759

  +

  P3.17 - Poster Session 3 - Bronchoscopy, Endoscopy (ID 185)

  • Event: WCLC 2013
  • Type: Poster Session
  • Track:
  • Presentations: 1
  • Moderators:
  • Coordinates: 10/30/2013, 09:30 - 16:30, Exhibit Hall, Ground Level

  • 12765

    +

    P3.17-006 - Endobronchial Ultrasound Elastography in mediastinal lymph nodes: initial experiences (ID 2227)

    09:30 - 09:30  |  Author(s): M. Mineshita
    • Abstract

    Background
    To determine the feasibility Endobronchial Ultrasound (EBUS) Elastography for mediastinal lymph nodes (LNs)

    Methods
    Mediastinal LNs in sarcoidosis (n=5) and metastatic LNs in lung cancer patients (n=7) were examined with B-mode ultrasound, Doppler and EBUS elastography. The elasticity distributions were classified into homogenous green pattern, Heterogenous blue-predominant pattern, ad Homogenous blue pattern. The strain ratio (strain of LN/ strain of fatty tissue) was measured in 3 cases of sarcoidosis and 2 cases of metastatic LNs.

    Results
    In the elastogram, green on the EBUS images correspond to relatively soft tissue and blue correspond to relatively hard tissue. In the elastogram, mediastinal LNs in sarcoidosis of all 5 cases were classified in homogenous green pattern. In the elastogram of metastatic LNs in 7 lung cancer patients, LNs of 5 cases were classified in heterogenous blue-predominant pattern and LNs of the residual 2 cases were classified in homogenous blue pattern. Homogenous green pattern A blue-predominant pattern, either homogenous or heterogenous, supported the diagnosis of malignant LNs. The strain ratio was 1.31, 3.16, and 5.48 in 3 cases of sarcoidosis respectively, and 17.65 and 29.0 in 2 cases of metastatic LNs respectively.

    Conclusion
    EBUS elastography would be a feasible method to visualize the elasticity of mediastinal LNs.