What Does Excess Bowel Gas Detected In Ultrasound Mean?

Hi..Doctor ....my mother visited to a doctor for gastric or acidity or burning heart type of symtoms ..then he adviced for ultrasound of whole abdomen..blood test , urine test..and x-ray..in ultrasound -excess bowel gas detected. .and a tiny cyst in the lower lobe of left kidney. .After this he prescribed. Antacidic tablets along with digene syrup..but surprisingly librotryp after dinner also..So doctor what does it mean