Surgery detection.. Obtain information about the disease. Detecting the fact of tumors in the abdomen or in the anus by endoscopy and pinhole or in the colon

Surgery is all surgery to obtain information about the disease can not be obtained by other means (radiology - endoscopes - medical analysis and others), including: the detection of the fact of tumors in the abdomen, the detection of the fact of tumors in the anus through the endoscopy and paternity, detection About the fact of tumors in the colon.
This surgery should only take place after doctors have exhausted other, less dangerous methods.