Endoscopic Ultrasound Radiofrequency Ablation (RFA) is a treatment method used to destroy abnormal tissue, like tumors, using heat. It's guided by an endoscopic ultrasound, which means a doctor uses a tiny camera and ultrasound to see inside the body and guide the procedure. This study is collecting data from RFA procedures done by Indiana University doctors to help treat tumors or adenopathy (swollen glands). The gathered information will help improve future treatments.

• The study will use existing medical records and no extra procedures are needed.
• Participants will be monitored for up to 10 years after their procedure.
• Patients will receive follow-up calls 1 and 2 weeks after the procedure.

To join, participants must be 14 years or older and referred for tumor or adenopathy treatment. Those under 14 or unable to understand the consent due to language or disability cannot join.