Pouch-like protruding shadow of the ascending colon is not necessarily cancer. For the colon cystic pouch-like prominent shadow, usually for abdominal radiography can be found in an abnormal manifestation, may be fecal stone, may be food debris and tuberculosis mycobacteria infection caused by, and may be the patient himself malignant tumors. For this situation need to use abdominal enhancement CT examination, because of the higher resolution of abdominal enhancement CT, can be identified on the nature of the cystic pouch shadow, can also let the patient for gastroenteroscopy. If necessary, endoscopic resection followed by pathologic examination can be performed, which can clarify the diagnosis. If there is any discomfort, seek medical attention promptly, and patients are advised to go to the gastroenterology department and gastrointestinal surgery department of the local hospital for further consultation.