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