What is a "prominent air-filled bowel loop"? i had a ultrasound done on my abdomen and these were my results. it's located in the left upper quadrant.

Likely normal thing: Ultrasound waves run very well through fluid and solid parts of the body and very poorly through air and bones. The comment that you have posted likely indicates that pictures taken with the Ultrasound was not as good as you would expect due to prominent air filled bowel loop.

Normal: That could mean anything from just normal bowel to sometimes any problems with the bowel that causes it to slow down or obstruct. Most of the time, they put the statement to tell you that the bowel was in the way and it obstructed the view of the organs in that area. In the left upper quadrant: they will be looking at the spleen, the left kidney and the left lobe of the live