Some colon tumors are malignant (see colon cancer article), although benign are more common. Tumors occur individually or in groups (the cause is unknown). In most cases, these are small growths called polyps, although in some cases the benign tumor may grow to the extent that it causes bowel obstruction.
Since 1 out of 100 benign tumors migrate into malignant form, such growths are regularly removed as soon as their presence is detected.
Many people have these growths in their colons, but with no symptoms, so people are unaware of it. Tumors are often detected only during X-rays that are performed for some other reason. Sometimes, however, benign tumors “warn” us about their presence with signs such as dark blood in the stool or mucus discharge from the anus (which leaves ”traces” on the underwear).
Tumors are often diagnosed and removed simultaneously by colonoscopy, sigmoidoscopy, or proctoscopy. If, in your case, this procedure can not be performed, a relatively simple laparotomy may be sufficient to remove the tumor and thus avoid the risk of obstruction or development of malignant tumor.