Procedural Outcomes in Endobronchial Ultrasound - Transbronchial Needle Aspiration (EBUS-TBNA) With and Without Rapid On-Site Evaluation (ROSE)

Inclusion Criteria: 1. Subject provides informed consent 2. Subject is \>18 years of age 3. Subject is scheduled to undergo flexible bronchoscopy with EBUS-TBNA of suspected enlarged mediastinal or hilar lymph nodes as part of their standard medical care 4. A negative pregnancy test in women of child-bearing potential 5. Subject is mentally capable of following study directions Exclusion Criteria: 1. Study subject has any disease or condition that interferes with safe completion of initial or follow-up assessments 2. Concurrent participation in another study involving investigational drugs or investigational medical devices 3. Inability to read and understand the necessary study documents