Had a CT scan done recently and here are the results: CT scan of the abdomen shows small cortical cyst of the liver, CT scan of the pelvis shows abnormal wall thickening of the sigmoid colon with some adjacent edema , possibility of neoplasm is not excluded. Also have a sharply marginated elliptical fluid collection that may represent an ovarian cyst at the left adnexa. Have had diarrehea for months, had a colonoscopy 2 years ago which is fine. Had a very bad early cancer poly 5 years ago. Should I be concerned?