Statistics from 2020 show that the highest incidence of digestive tract cancer in my country is colorectal cancer, and the number of newly diagnosed colorectal cancer patients this year reached 560,000.
The so-called colorectal cancer actually refers to cancer of the rectum and colon, but compared with the latter, the incidence of rectal cancer is significantly higher, and the prognosis is better. Relatively poor!
Rectal cancer has a poor prognosis because the rectum is uniquely located, it penetrates deep into the pelvic cavity The anatomical relationship is quite complicated, and even if surgical treatment is possible, the postoperative recurrence rate is relatively high.
Not only that, because the function of the rectum is to store and excrete feces, the symptoms of rectal cancer in the early stage of symptoms are very similar to those of other perianal diseases.
Many rectal cancer patients, even if they have obvious manifestations, often think that they are just suffering from hemorrhoids, and then ignore the best time for diagnosis and treatment.
When the patient’s symptoms reach the severity and go to the doctor for examination, the disease often has developed to the advanced stage.
The question is, what are the advanced symptoms of rectal cancer?
1. Bloody stools: It can be said that bloody stools are the most typical symptoms of rectal cancer, but they are often ignored by patients, or mistaken for hemorrhoids, which ultimately delays treatment.
As everyone knows, there is a certain difference between rectal cancer bloody stool and hemorrhoids bloody stool, because the former is internal bleeding, while the latter is passive bleeding.
The bloody stool caused by colorectal cancer is mostly related to the erosion and necrosis of the cancer itself and the invasion of the blood vessels by the cancer cells. Therefore, the stool excreted by the patients is often mucus mixed with blood and stool,
strong>Or pus and blood in the stool.
For colorectal cancer after advanced stage, due to cancer tissue necrosis and shedding, there may be blood clots and necrotic tissue in the stool; >
2. Intestinal obstruction: In the early stage of rectal cancer, Affected by the stimulation of cancer growth, patients may have the frequency of bowel movements increased, accompanied by feelings such as tenesmus, unclean defecation.
However, bowel cancer is not the same after entering the advanced stage, because at this time the cancer has grown to a certain extent, and the bowel becomes more and more narrow.
Especially the cancers appearing at the junction of the rectum and the sigmoid colon are almost all stenotic hard cancers, so the patients will have obstructive symptoms, which are mainly manifested as the stools become longer and longer. More and more fine, difficult defecation, constipation, abdominal distension and pain.
After intestinal obstruction, the symptoms of abdominal pain will be more obvious and even unbearable;
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3. Anal pain and incontinence: After rectal cancer enters an advanced stage, cancer cells will infiltrate the surrounding tissues. For example, cancerous changes in the lower rectum, cancer cells often invade the anal canal, and then cause abnormal anal pain.
If cancer cells have involved the anal sphincter, the patient may also experience anal incontinence, not only involuntary discharge of stool, but also pus and blood often flow out of the anus, contaminate underwear, and produce strong of stench.
In addition to the above three symptoms, rectal cancer has many symptoms, such as Lower abdominal pain, anemia, weight loss, dyspepsia, fever and more.
However, it cannot be denied that as long as rectal cancer has symptoms, it has basically entered the stage of development, or even has reached the stage of extensive metastasis. It is difficult to detect rectal cancer in the stage of carcinoma in situ.
And if you want to detect rectal cancer as soon as possible, all you can do is to be vigilant in your daily life, In addition to observing physical changes, people who have a family history of bowel cancer, are over 50 years old, and have a history of bowel polyps should also go to a doctor for regular rectal cancer screening as recommended by doctors, so as to prevent cancer Hide away.