Patient: Description of the condition (onset time, main symptoms, hospital visited, etc.): The patient is female, 56 years old, in general physical condition with gum, has been defecating many times in the morning, thin, this time the condition: blood in the stool, four months, thought it was hemorrhoids, the day before yesterday, colonoscopy, there is a tumor, cauliflower-shaped, take some medicine to eliminate hemorrhoids by themselves, now what should be taken for treatment, whether the treatment of anal preservation minimally invasive. Laparoscopic minimally invasive surgery for rectal cancer is a mature treatment method. Due to the improvement of surgical techniques and surgical instruments, the possibility of anal preservation for rectal cancer has been greatly increased compared to the past. It depends on the distance of the tumor from the anus, the size of the tumor, the depth of infiltration, etc. Seek medical consultation as early as possible. Patient’s condition: about 5-8 CM from the anal opening, the rectal mucosa is elevated, cauliflower-shaped, covered with dirty moss on the surface, with poor elasticity and easy bleeding when touched. The anal cavity is narrow and there is resistance to the passage of the mirror. In terms of the location of the tumor, it has the condition of anus preservation, but preoperative CT/MRI examination is needed to understand the size of the tumor and the degree of surrounding invasion. Pre-operative colonoscopy should try to examine the whole colon to clarify whether there are problems in other colon. We recommend patients to come over for consultation and treatment. Surgery is one aspect, and preoperative evaluation, postoperative treatment, and chemotherapy and radiotherapy need to be integrated to ensure maximum efficacy and safety of treatment. Patient: About 4.5CM from the anal opening, posterior rectal wall, can we preserve the anus, can we do minimally invasive surgery, is the surgery good and where is it done with a high success rate? Your question has been answered before. In terms of the distance and location of the tumor, it is possible to preserve the anus, but only if the tumor does not penetrate the intestinal wall and invade the surrounding organs. This requires CT/MRI examination results. Minimally invasive laparoscopic surgery can be done and is our first choice.