I had lung surgery in 2020 keyhole for early stage cancer. Ever since surgery I've had severe digestive problems, that I had never experienced prior to surgery. Not just bloating, but this odd sort of ring of what we\d call fat above the tummy area and just under the ribs. It doesn't feel like normal fat from eating too much of the wrong foods, in fact I eat less than I did before surgery and a couple of times a week only have home made soup with bread for dinner and toast for breakfast, so it's not related to how I eat. I've gone up 2 dress sizes so all my clohtes no longer fit, and I have never in 70yrs been overweight. I wonder if it had anything to do with the drugs, oxycodone? I know for example that some psychiatric drugs can cause massive weight gain. Could my digestive problem relate to my condition after surgery? I couldn't eat for a couple of weeks, just cheese and biscuits in the evening. I got pneumonia following surgery and a collapsed lung so had no appetite. I lost a great deal of weight and was being given handfuls of medication every 4 hours which really damaged my stomach, so am wondering is it a combination of these things? Anyone had any thoughts on this? My GP tells me it's GERD, I don't think so. I'm in discomfort almost every day, my back hurts from the build up of either food or gas causing the bloating. I'm despairing of anyone in the medical profession coming up with an answer and from what I read here, this is quite common!