My father's been complaining of a heavy feeling on the left side of his stomach and he also suffers from repetitive episodes of gas and acidity we've done multiple sonographies and all the reports just say abdominal gas. He has started to loose weight. What could be the cause? Please explain!

Suggestions offered by doctors on Lybrate are of advisory nature i.e., for educational and informational purposes only. Content posted on, created for, or compiled by Lybrate is not intended or designed to replace your doctor's independent judgment about any symptom, condition, or the appropriateness or risks of a procedure or treatment for a given person.