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Rectal cancer
Can proctitis cause discomfort in the rectum?
As to whether proctitis will cause discomfort in the rectum, it depends on the specific situation. If it is only mild proctitis, generally, it does not cause discomfort for the patient. However, if the proctitis is severe and accompanied by conditions such as rectal ulcers, rectal discomfort is likely to occur, and the patient may experience symptoms such as pain and a sense of urgency followed by incomplete defecation. In severe cases, fever may also occur. Once a patient develops proctitis, it is advised to promptly complete an electronic colonoscopy examination. If necessary, tissue should be taken for a pathological biopsy to rule out the possibility of malignant tumors in the rectum.
What are the symptoms and early signs of rectal cancer?
In the early stages of rectal cancer, there are no obvious symptoms. Only when the condition progresses to a certain extent do some clinical symptoms appear. The first is a change in bowel habits or the nature of the stool. The second possible symptom is abdominal pain. The third possible outcome is intestinal obstruction. The fourth symptom occurs when the tumor develops to a certain extent, and lumps can be felt in the abdomen. The fifth point includes possible symptoms of systemic poisoning such as anemia, weight loss, fever, and weakness. The sixth point is that in the advanced stages of rectal cancer, some metastatic lesions may appear, such as extensive pelvic metastasis and infiltration, leading to pain in the sacral area and sciatic neuralgia; if areas like the vaginal, rectal mucosa, or bladder mucosa are involved, there may be vaginal bleeding or blood in the urine, resulting in conditions like rectovaginal or rectovesical fistulas.
Postoperative Diet and Care for Rectal Cancer
Firstly, rectal cancer is a malignant tumor of the digestive tract, so after surgery, it is recommended to eat foods that are easy to digest and absorb. Secondly, do not smoke, abstain from alcohol, and avoid spicy and irritating foods. Thirdly, it is advised not to eat indigestible foods, such as bean products and foods that cause gas, and to consume them in smaller quantities. Fourthly, rectal cancer may deplete a large amount of nutrients in the body, coupled with the damage from surgery, so it is essential to ensure a nutrition-rich diet, consume nutritious foods such as soups, easily digestible congee, and high-quality proteins to increase the body's nutrients. Fifthly, attention should be paid to timely adding clothing to avoid catching a cold.
The difference between rectal cancer and colon cancer lies in the location of the cancer. Rectal cancer occurs in the rectum, which is the final part of the large intestine, while colon cancer occurs in other parts of the colon.
Rectal cancer and colon cancer are collectively referred to as colorectal cancer, named according to the different locations where the tumors occur. Rectal cancer occurs in the rectum. Colon cancer includes tumors in the transverse colon, descending colon, ascending colon, and sigmoid colon, and tumors in these areas are called colon cancer. Both are known as colorectal cancer, and they exhibit similar clinical manifestations, including rectal bleeding, abdominal pain, and changes in bowel habits, such as constipation, diarrhea, alternating constipation and diarrhea, and changes in stool shape, such as narrowing of the stool. They are merely named differently based on the location of the tumors and are collectively referred to as colorectal cancer.
Does stage II rectal cancer require chemotherapy?
Whether a stage II colorectal cancer patient needs adjuvant chemotherapy after surgery depends on the specific circumstances. For example, stage IIA patients are classified as T3, N0, M0. The necessity of adjuvant chemotherapy for these patients should be determined based on the pathological report. If the report indicates the presence of vascular invasion, neural invasion, poor differentiation, or if microsatellite stability testing shows poor prognostic factors, then such patients should undergo postoperative adjuvant chemotherapy. If none of these conditions are present in a stage IIA patient, then postoperative adjuvant chemotherapy may not be necessary. Generally, stage IIB patients, whose tumors have penetrated the full thickness of the intestinal wall, are recommended to undergo postoperative adjuvant chemotherapy. Therefore, the specific conditions of the patient need to be considered.
Rectal cancer stage III
Rectal cancer staging is based on the TNM system. "T" refers to the primary tumor, and its stage depends on which layer of the bowel wall the tumor has invaded. "N" is based on whether there are lymph node metastases and the number of lymph nodes involved. "M" indicates whether there are metastases to distant organs. Staging is determined according to the TNM situation, where Stage I is the earliest and Stage IV is the latest. Stage III indicates lymph node metastasis without distant organ metastases, such as to the liver or lungs. In such cases, irrespective of whether T is T1 to T4, if there is lymph node involvement without distant organ metastasis, it is staged as Stage III.
Stage IV rectal cancer
In the staging of rectal cancer, we generally use the TNM staging system clinically. "T" refers to the primary tumor, "N" indicates whether there is lymph node metastasis, and staging is based on the status of the lymph nodes. "M" indicates whether there is distant metastasis. Stage IV refers to any stage of "T" and any stage of "N", as long as there is distant metastasis, such as rectal cancer metastasizing to the liver, lungs, or bones. When these distant organ metastases occur, the staging is M1, any "T", any "N", M1. This scenario is stage IV, indicating the presence of distant organ metastasis and represents advanced stage rectal cancer patients.
What are the symptoms of rectal cancer?
Symptoms of rectal cancer include changes in bowel habits, such as a feeling of heaviness around the anus, a constant need to defecate, or diarrhea. Some patients may experience constipation, or alternating episodes of diarrhea and constipation. Another common symptom is a change in the shape of the stool, with the stool becoming narrower. Additionally, abdominal pain and rectal bleeding are also common symptoms. Some patients with rectal cancer may exhibit clinical signs of intestinal obstruction, which includes constipation, inability to pass stool or gas, which means no flatulence. This is accompanied by nausea and vomiting. Other common symptoms include significant abdominal pain and bloating.
Can rectal cancer be cured?
If rectal cancer is detected in its early stages, such as stage I or II, curative surgery can be performed. Postoperative decisions regarding the necessity of adjuvant radiotherapy or chemotherapy are based on the postoperative pathological staging. Early-stage rectal cancer patients can achieve a cure through surgical treatment combined with some postoperative adjuvant therapies. After curative surgery, the overall five-year survival rate is approximately 50%. However, this rate can vary and is associated with several factors such as postoperative pathology, whether there is lymph node metastasis, the presence of vascular tumor thrombi, and nerve invasion, among other high-risk factors for recurrence, showing certain individual differences. Yet, early-stage rectal cancer patients can achieve a cure through these methods.
Symptoms of rectal cancer recurrence
The symptoms of rectal cancer recurrence can include changes in bowel habits and stool characteristics, possibly presenting as rectal bleeding, increased frequency of bowel movements, a sensation of heaviness in the anus, and changes in stool shape, such as narrowing. The second symptom may be abdominal pain, particularly persistent and subtle pain. The third symptom involves palpable abdominal lumps or masses, especially with right-sided colon cancer. The fourth symptom is intestinal obstruction, which can occur if the bowel is blocked due to the recurrence of rectal cancer, leading to symptoms of intestinal obstruction. The fifth symptom, if the recurrent rectal cancer has metastasized, may lead to symptoms at the respective metastatic sites.