Mediastinal Infection After Ultrasound-guided Needle Aspiration.

We describe 2 cases of mediastinal abscess developing after endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) in patients with thoracic malignancies. The first case was that of a 68-year-old male patient with a history of colon cancer presenting with new mediastinal adenopathy. EBUS-TBNA confirmed metastatic colon adenocarcinoma; however, he developed fever and atrial fibrillation 32 days after the procedure and was diagnosed with mediastinal abscess. The patient was successfully treated with antibiotics. The second case was that of a 66-year-old previously healthy male who presented for evaluation of cough. Imaging showed a right paratracheal mass and he underwent EBUS-TBNA sampling, which showed malignant cells. Eight days after the procedure the patient developed fever and was diagnosed with mediastinal abscess. The second patient was treated with antibiotics and several debridements; however, he was eventually transitioned to hospice care because of a continued spread of his cancer. Although rare, mediastinal infection is a complication of endoscopic mediastinal needle aspiration.