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Rectal cancer
Could having blood in the stool for five years be rectal cancer?
If there has been blood in the stool for five years, whether it's colorectal cancer or not, this can only be confirmed through a colonoscopy. Furthermore, pathological tissue analysis and biopsy are necessary to make a definitive diagnosis. Pathological examination is the gold standard for diagnosing cancer. If cancerous changes are present, surgical treatment should be undertaken promptly to prevent the spread of cancer cells. If there are no malignant changes, symptomatic treatment measures can be adopted. Conditions such as chronic colitis, ulcerative colitis, or hemorrhoids could also cause blood in the stool.
Is anal pain and rectal bleeding indicative of rectal cancer?
Pain in the anal area, accompanied by blood in the stool, does not necessarily indicate rectal cancer. There are many causes of pain and bloody stools, which require identification and diagnosis through the color of the bloody stools, digital rectal examination, and colonoscopy. Common causes of bright red bloody stools or pain are mainly due to hemorrhoids and anal fissures. During the onset of rectal cancer, early stages generally do not involve pain in the anal area. It is mainly characterized by changes in bowel habits, or dark red blood in the stool in the middle to late stages. The tumor may grow larger, causing difficulty in defecation, and may even induce systemic symptoms such as weight loss, anemia, and intestinal obstruction.
What are the differences between colon cancer and rectal cancer?
The fundamental difference between colon cancer and rectal cancer lies in their locations of occurrence. Both are collectively referred to as colorectal cancer, which is one of the more prevalent malignancies of the digestive system in China. Colon cancer originates from the mucosa of the colon, while rectal cancer originates from the mucosa of the rectum, with different points of origin. In terms of treatment, there are significant differences between colon and rectal cancer. In surgical treatment, both cancers typically require surgery as the first choice. However, patients with colon cancer can preserve their anus, whereas some patients with low rectal cancer might face situations where anus preservation is not possible. In internal medicine, the chemotherapy drugs used for colon and rectal cancer are quite similar. In terms of radiation therapy, there are notable differences; radiation treatment is generally not included for colon cancer but is an important treatment method for rectal cancer.
How to detect colorectal cancer early
In clinical practice, to detect colorectal cancer early, screening should be prioritized for individuals with a family history of colorectal cancer. This generally involves tests for tumor markers and colonoscopy examinations. The tumor markers include carcinoembryonic antigen, carbohydrate antigen 724, carbohydrate antigen 199, and carbohydrate antigen 125, among others. Colonoscopy examinations should be conducted annually. Furthermore, for individuals with colorectal polyps, yearly colonoscopy is especially recommended to detect early stages of colon cancer. Similarly, for individuals suffering from chronic inflammatory diseases of the colon and rectum such as ulcerative colitis or Crohn's disease, colonoscopy examinations should also be performed to facilitate early detection of colorectal cancer.
Is rectal cancer hereditary?
This answer is also possible, as one of the causes of any cancer includes the possibility of genetics. However, this possibility is generally small and not everyone is likely to have it. It also depends on the incidence of disease within the entire family. If one is in a high-risk category due to certain genetic factors, then it is crucial to have regular and thorough follow-up checks. Some people might even try treatments specifically targeting genetically inherited colorectal cancer.
Can the anus be preserved if the rectal cancer is 3 cm away from the anus?
When rectal cancer is 3cm from the anus, it generally isn't possible to preserve the anus. Currently, the commonly used surgical methods for rectal cancer are the Dixon and Miles techniques. Generally, the threshold is 5cm from the anus; when the tumor is within 5cm of the anus, it often necessitates a Miles procedure, which does not preserve the anus. When the tumor is more than 5cm from the anus, an anus-preserving Dixon procedure can be performed. However, in considering the radical resection of rectal cancer, preserving the anus should not be the primary choice; instead, the main goal should be curative.
Is anal canal cancer considered a type of rectal cancer?
Anal canal cancer can also be considered a type of rectal cancer, specifically the type located near the anus, referred to as anal canal cancer. Generally, anal canal cancer may have a higher malignancy level, and its initial main symptoms include rectal bleeding and changes in stool characteristics, such as narrower stools. There may also be a sensation of heaviness and pain in the anal area. Diagnosis is typically confirmed through a digital rectal examination and a biopsy. If necessary, an anoscopy and other common examinations can be conducted to check for lesions in other parts of the intestine. Generally, the prognosis for anal canal cancer is not as favorable as for other types of rectal or colon cancer.
What is good to eat after rectal cancer surgery?
Patients who have undergone surgery for rectal cancer should pay attention to the following points regarding their diet: First, consume a moderate amount of foods containing monounsaturated fatty acids, such as olive oil and tuna. Second, avoid overheating animal products and vegetable oils during cooking. Third, eat more foods rich in dietary fiber, such as konjac, soy and its products, fresh vegetables and fruits, and algae. Fourth, intake vitamins and trace elements by eating fresh vegetables and fruits to supplement carotene and vitamin C, and consume appropriate amounts of walnuts, peanut milk, products, and seafood to supplement vitamin E. Pay attention to the intake of foods rich in the trace element selenium, such as malt, fish, and mushrooms.
What are the early symptoms of rectal cancer in women?
The early symptoms of female rectal cancer are primarily localized to the rectum. Most patients exhibit symptoms such as bloody stools, recurrent constipation, or alternating occurrences of diarrhea and constipation. Some patients may experience a change in stool characteristics, an increase in the frequency of daily bowel movements, and narrower stools. Additionally, some early-stage patients may exhibit symptoms similar to bacterial dysentery, such as the discharge of mucus and bloody pus in stools, and a feeling of incomplete evacuation after a bowel movement. Some female rectal cancer patients may mistake bloody stools for hemorrhoids and consequently avoid seeking medical attention. Early symptoms are not distinctive, and many patients may overlook them, leading to a delay in the early detection of rectal cancer.
What are the early symptoms of rectal cancer?
Early symptoms of rectal cancer include a foreign body sensation in the anus, bloody stools, changes in stool shape, and more. Rectal cancer is a prevalent malignant tumor of the digestive tract in China, originating from the rectal mucosa. The most common pathological type is adenocarcinoma, with other pathological types being relatively rare. Patients exhibiting bloody stools or changes in stool shape should consider the possibility of rectal cancer. Patients suspected of having rectal cancer should undergo a rectal examination and colonoscopy as soon as possible. Abnormal masses in the rectum can be detected during the rectal examination and colonoscopy. Tissue can be taken from the mass for pathological diagnosis. Patients diagnosed with rectal cancer via pathology are primarily treated with surgery, and those who cannot undergo surgery should receive combined radiotherapy and chemotherapy treatment.