Easiest way. Upper endoscopy is most likely the easiest way to obtain a biopsy. However, going to surgery would be another way to obtain a biopsy of the stomach and possibly ct guided needle biopsy if the mass is visible on ct scan.
Yes. If they are doing an endoscopic stomach biopsy then yes.
Gastroscopy (EGD) Hi, in clinical practice the GI physician usually performs a pan upper GI endoscopy (egd- esophago-gastric dudonescopy) with visualization of the esophagus the stomach and the duodenum upto the second portion of the duodenum, even if the clinical indication for the gastroscopy (egd) is only for a stomach biopsy. Hope this helps.
Maybe. You may feel some discomfort but should be tolerable. Call your doctor if not better soon.