<s>[INST] Hello, I have been having pain and pressure under my left rib and in my back. I also at times get a hard lump or knot around the area,(where the pain is) I went to my Dr. and she thinks it is intestinal problems. It just scares me as every now and then I get the hard lump or knot and dont have any idea what it can be. I had a colonoscopy 2 years ago and the Dr. said see you back in 10 years for another one. I worry about and abdominal aneurysm. Please if you have any suggestions I would appreciate your help. Robin [/INST] Hello and welcome to Chat Doctor, The feeling of lump in abdomen requires abdominal investigations. Since, your doctor advised you get a colonoscopy within next 10 years, it is possible that you are suffering from colonic polyps. Whatever the previous pathology detected on previous endoscopy, fresh investigations need to be done to look for the cause of current problem. An ultrasound abdomen will look for any organomegaly or any abnormal growth. You need to consult your gastroenterologist for clinical examination, relevant investigations and thus management. Thanks and take care Chat Doctor.  </s>