The standard investigation for such a symptom is a gastroscopy. This involves passing a camera down the esophagus into the stomach and ends in the duodenum. The patient is comfortably sedated and does not feel any pain or distress. The whole procedure is about 10 min and is done as a day procedure. Any suspicious lesion can be biopsied and sent for reporting.
Should the gastroscopy turn out normal and the symptoms persist, the next step is an ultrasound of the gallbladder to exclude gallstones as a cause of the discomfort.
Appropriate treatment is directed at the diagnosis after the gastroscopy.
