Answer:
Endoscopic biopsy
Explanation:
In order to diagnose the cause of an illness, your doctor performed a procedure where she used a tube with a camera to visualize your stomach. which type of procedure did you have? biopsy endoscopy surgery ekg
Just like the name implies,it is a procedure for viewing internal organs of the body(stomach, abdomen, liver) with the aid  of a tube, with light and camera attached(endoscope) inserted through surgical incisions.
