Hello and welcome to the forum. Very sorry you are having this difficulty. I would ask your doctor about the findings. I take it you are having no symptoms or issues with your lungs or breathing? This is likely why the doctor didn't mention it. However, it sounds like this was a GI doctor and not your primary? You may want to ask your primary care doctor about the finding if this is the case. https://www.webmd.com/lung/what-is-bronchiectasis The provided link to copy and paste into your browser gives an overview of bronchiectasis. Typically it can make it harder to breath and is chronic but has flare ups and might not be constant with symptoms. It can be worse over time. You may be very mild and asymptomatic but good to be aware if you do begin having symptoms of it. Were you sick a lot in the past suffering infection and inflammation? This is what normally causes it. Being aware of this and treating any infections immediately will be important for you. So, do let your primary care doctor know.
Consider getting a dedicated CT chest to evaluate your entire lungs. A wide variety of entities may produce bronchiectasis. The distribution of the bronchiectasis helps narrow differential diagnosis. For example, bronchiectasis most pronounced in the right middle lobe and lingula raises the possibility of nontuberculous mycobacterial infection.