Endobronchial Ultrasound Elastography in the Evaluation of Mediastinal and Hilar Lymph Nodes
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Date
2024-06
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Publisher
International Society for Contemporary Medical Research
Abstract
Introduction: Endobronchial ultrasound (EBUS) elastography is an imaging procedure for describing the elasticity of intrathoracic lesions and provides important additional diagnostic information. Objective: The purpose of this study was to compare the elastographic patterns of lymph nodes with the outcomes from endobronchial ultrasound- guided transbronchial needle aspiration in order to assess the usefulness of endobronchial ultrasound elastography for mediastinal and hilar lymph nodes. Material and methods: A total of 52 lymph nodes were examined. Endoscopic ultrasound processor and a convex probe endobronchial ultrasonography were utilized to evaluate elastographic patterns that were categorized according to color distribution as follows: Type 1, which consists primarily of non-blue colors (green, yellow, and red); Type 2, which consists partly blue, partly non-blue (green, yellow and red); and Type 3, which consists of predominantly blue colors. The ultimate pathologic outcomes of the endobronchial ultrasound- guided transbronchial needle aspiration were compared to the elastographic patterns. Results: On pathological evaluation of the lymph nodes, 11 were found to be benign and 41 were malignant. The lymph nodes that were classified as Type 1 on endobronchial ultrasound elastography were benign in 8/8 (100%); for Type 2 lymph nodes, 3/9 (33.3%) were benign and 6/9 (66.6%) were malignant; Type 3 lymph nodes were benign in 3/35 (8.5%) and malignant in 32/35 (91.4%). In classifying Type 1 as 慴enign� and Type 3 as 憁alignant,� the sensitivity, specificity, positive predictive value and negative predictive values were 85.3%, 81.8%, 94.59%, and 60%, respectively. Conclusions: It is possible to predict nodal metastases during endobronchial ultrasound-guided transbronchial needle aspiration using the noninvasive endobronchial ultrasound elastography of mediastinal and hilar lymph nodes.
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Keywords
EBUS, Elastography, Lymph Nodes, Strain Ratio
Citation
Reza Maqsumi, Prakash Ved, Nivedita, Firdaus Huma, Kazmi Syed Ahmad Hussain, Gautam Vikram.. Endobronchial Ultrasound Elastography in the Evaluation of Mediastinal and Hilar Lymph Nodes. International Journal of Contemporary Medical Research. 2024 Jun; 11(6): 1-6