Endoscopic Ultrasonography-guided Fine Needle Aspiration for Computed Tomography-negative and Positron Emission Tomography-positive Mediastinal Lymph Node in a Patient with Recurrent Lung Cancer

摘要

Biopsy is required to confirm lymph node (LN) metastasis in position emission tomography (PET)-positive LN due to the low specificity of PET. Currently, invasive surgical techniques such as mediastinoscopy or mediastinotomy are standard procedures for obtaining LN specimen. It would be desirable to have a less invasive way of sampling suspicious LN. Herein, we report a case of successful endoscopic ultrasonography-guided fine needle aspiration (EUS-FNA) for the diagnosis of CT-negative and PET-positive LN that was found after curative resection in lung cancer. To the best of our knowledge, this is the first description in Korea to perform EUS-FNA for the evaluation of metastatic LN during the follow-up period after lung cancer resection.