What are the symptoms of colon cancer? What are the symptoms of colon cancer

Patients with colon cancer present with abdominal distension and dyspepsia in the early stage, followed by changes in bowel habits, abdominal pain before defecation, and later mucous or mucopurulent bloody stools. After tumor ulceration, blood loss, and toxin absorption, poisoning symptoms such as anemia, low-grade fever, fatigue, emaciation, and edema often appear. Abdominal distention, abdominal pain, constipation, or stool, abdominal bulge, bowel-shaped, local tenderness, and strong bowel sounds on physical examination suggest the possibility of incomplete or complete low bowel obstruction.

If the tumor infiltrates and adheres to the omentum and surrounding tissues, forming an irregular mass, it has a certain degree of mobility. In the late stage, signs of liver metastasis such as jaundice, ascites effusion, edema, cachexia, anterior rectal foveal mass, supraclavicular lymphadenopathy and other distant tumor metastasis may appear. The clinical manifestations of colon cancer vary depending on the location and are described as follows:

1.Right colon cancer.

The right colon has a large lumen, the stool is liquid, and the cancer is mostly ulcerative or cauliflower-shaped carcinoma, which rarely forms annular stricture and obstruction does not occur frequently. If the cancer ulcerates and hemorrhages, secondary infection, and toxin absorption, abdominal pain, stool changes, abdominal mass, anemia, weight loss, or cachexia may occur.

2.Left colon cancer.

The left colon has a thin intestinal lumen and dry and hard stools. Left colon cancer is often invasive and prone to annular stenosis, which is mainly manifested as acute and chronic intestinal obstruction. The mass is small in size, there is neither ulceration and bleeding, nor toxin absorption, and symptoms such as anemia, emaciation, and cachexia are rare, and it is difficult to palpate the mass.

Colon cancer tends to have organ metastases, mainly in the liver. Lymphatic metastases generally spread from near to far, and there are also transboundary metastases that are not in order. Lymphatic metastasis is more likely after cancer invades the muscularis of the intestinal wall.

Colon cancer cells or emboli can also metastasize through the bloodstream, first to the liver, and then to other tissues and organs such as the lungs, brain, and bones. Colon cancer can also directly infiltrate surrounding tissues and organs, fall off in the intestinal lumen, and can be implanted on other mucosa. If it spreads to the whole abdomen, it can cause carcinomatous peritonitis and ascites effusion.

You mentioned the symptoms of colon cancer and the answers are as follows: 1. Gastrointestinal symptoms: manifested as bloating, discomfort or indigestion-like symptoms. Among them, in the case of right colon cancer, abdominal pain, discomfort or dull pain is mostly present.

It may begin intermittently and then become persistent, often in the lower right quadrant, much like a chronic appendicitis flare-up; In the case of left colon cancer, it is mostly manifested as obstruction can be sudden, abdominal cramps, accompanied by abdominal distention, hyperperistalsis, constipation and obstruction of gas, or chronic obstructive symptoms such as abdominal distension and discomfort, paroxysmal abdominal pain, hyperintestinal sounds, constipation, blood and mucus in the stool, etc. 2. Changes in stool habits: right colon cancer is manifested as early thin stool, pus and blood, increased frequency of defecation, and alternating diarrhea and constipation can occur when the cancer continues to increase and affect the passage of stool; Left-sided colon cancer is more likely to present with constipation and worsens as the disease progresses.

In addition, if the cancer is located low, there may be a feeling of poor bowel movement and tenesmus. 3. Blood or mucus in the stool: in the case of right colon cancer, the amount of bleeding is small and the peristalsis of the colon is fully mixed with the feces, which is not easy to see by the naked eye, but the occult blood test is often positive; In the case of left-sided colon cancer, bleeding and mucus are not mixed with feces, and about 1 in 4 patients can see blood and mucus in the feces.

Generally, the first thing before dying is: there is a problem with sanity, consciousness is impaired, and as the saying goes, it is confused. The second is dyspnea, obvious wheezing, these are symptoms of hypoxia, and it is also dangerous to cough up phlegm, indicating that the tumor lesions are serious.

Colon cancer is a common cancer of the gastrointestinal tract, with a higher incidence at the age of 40-50 years, and more than half of it comes from adenoma cancer. The main symptoms are persistent abdominal pain, frequent bowel movements, mucus, systemic nutritional disorders, anemia, weight loss, often palpable sub-abdominal pouches, and the earliest clinical symptoms of colon cancer are changes in bowel habits and stool properties.

1. Early symptoms of colon cancer: In the early stage, there may be abdominal distention, discomfort, and indigestion-like symptoms, among which when it is right colon cancer, most patients will present with abdominal pain and discomfort or vague abdominal pain. Symptoms of early-stage colon cancer may start intermittently and become persistent.

Changes in bowel habits are also one of the symptoms of early colon cancer. When the right colon cancer is manifested as early stool thinning, pus and blood, and the frequency of bowel movements increases, when the cancer of colon cancer continues to enlarge and affects the passage of stool, there can also be alternating diarrhea and constipation, while left colon cancer is mostly manifested as difficulty in defecation, and with the development of colon cancer, it continues to worsen. 2. Abdominal mass:

It is a tumor or a mass infiltrated with the omentum and surrounding tissues, which is hard and irregularly shaped, and some can have a certain degree of activity with the intestinal tube, and the tumor is seriously infiltrated in the advanced stage, and the mass can be fixed. 3. Manifestations of intestinal obstruction: incomplete or complete low intestinal obstruction symptoms, such as abdominal distention, abdominal pain, constipation or stool.

Common symptoms of colon cancer are abdominal bulging, bowel-shaped, locally tender, and hyperactive bowel sounds on physical examination. The intestinal lumen of the left colon is relatively narrow, and the stool has become viscous and formed, and most of this part is invasive cancer, and the intestinal lumen is annularly narrowed, so the symptoms of intestinal obstruction appear early. 4. Symptoms of poisoning:

It is also one of the clinical manifestations of colon cancer, due to the ulceration of colon cancer tumor and blood loss and toxin absorption, it can often lead to anemia, low-grade fever, fatigue, emaciation, edema and other symptoms in colon cancer patients, especially anemia and emaciation. The right colon is rich in blood circulation and lymph, with strong absorption capacity, and most of the cancers are soft cancers, which are easy to ulcerate and necrosis and cause bleeding and infection, so the symptoms of poisoning are the mainstay. 5. Advanced symptoms of colon cancer:

There are signs of liver metastasis such as jaundice, ascites, and edema, as well as manifestations of distant spread and metastasis of tumors such as cachexia, anterior rectal fovea mass, and supraclavicular lymphadenopathy.

The common clinical manifestation of colon cancer is blood in the stool, of course, this blood in the stool may be a small amount of stool, mixed with some blood. This is a little different from the blood in the stool of rectal cancer, because the colon, which is on top of the rectum, its blood is often mixed with the stool, while the blood in the stool of rectal cancer, maybe that blood, is on the surface of the stool, which is a difference. In addition, there is also the blood in the stool of colon cancer, sometimes the amount may be relatively small, and it may not be visible in the stool.

We usually say that occult blood is positive, this situation is more common, and there is another situation, that is, in the stool, mucus and other situations, or mucus pus and blood, we call mucus stool, or pus and blood stool, which is generally speaking, is a clinical manifestation, and there is another one, the clinical manifestation is, we say the change of stool habits, what is the change of stool habits, we normal people generally speaking, the stool is formed, can be solved relatively smoothly, no constipation, no diarrhea and other conditions, But if he has colon cancer, then his habit of bowel movements will change, sometimes the patient will show diarrhea, the frequency of stool increases, sometimes it will manifest as constipation, or this diarrhea, the frequency of stool increases. And the appearance of this constipation alternately, there is another clinical manifestation, that is, it may be in the abdomen, there will be a lump, and the other is that the patient may appear, some intestinal obstruction, etc., these clinical manifestations, abdominal pain, intestinal obstruction, these clinical manifestations, but this is a comparison, more advanced manifestations, these clinical manifestations just mentioned, because every patient. The clinical manifestations that may occur will be different, and some patients, especially those with early colon cancer, may not have any clinical manifestations.

If these patients want to be detected early, they can only be detected early through our physical examination or cancer screening.

There are several forms of early symptoms and manifestations of colon cancer, and symptoms of poisoning can appear in the early stage of colorectal cancer: due to tumor ulceration and blood loss and toxin absorption, it can often lead to anemia, low-grade fever, fatigue, emaciation, edema and other manifestations in patients, especially anemia and emaciation. Rectal cancer may present with bloating, malaise, indigestion-like symptoms, followed by changes in bowel habits, such as increased bowel movements, diarrhea or constipation, and abdominal pain before defecation.

Later, mucous stools or mucopurulent bloody stools may occur, which is the earliest symptom of colon cancer.

Hello, most patients have varying degrees of abdominal pain and discomfort, such as vague abdominal pain, right abdominal fullness, nausea, vomiting and loss of appetite. Symptoms often worsen after eating, sometimes with intermittent diarrhea or constipation, and can be confused with chronic appendicitis common in the right lower quadrant, ileocecal tuberculosis, ileocecal segmental enteritis, or lymphoma.

Most of the early-stage colon cancers have no obvious symptoms, and sometimes they may manifest as diarrhea, changes in bowel habits, and many are diagnosed due to the discovery of mass lesions in the intestine during a health examination, or others. More advanced colon cancer is usually divided into the right half and the left half of the colon according to its anatomical position, and the more obvious symptoms of right half colon cancer are anemia, abdominal pain, malnutrition, etc.; Left-sided colon cancer is mostly manifested by changes in bowel habits and blood in the stool, especially non-bloody stools, and can also form in advanced stages with obstruction or other symptoms.

Well, I still know a little bit, my father also has this disease, usually stomach pain, discomfort, inability to defecate, bowel movement is more difficult, caused by irregular life.

A palpable mass in the abdomen, diarrhea, and constipation alternately accompanied by blood in the stool, most of which are colon cancer

Colon cancer is slightly more common in men than in women, and is more likely to occur between the ages of 50 and 60

Colon cancer basically has no special symptoms, but if it is broken down, if it occurs on the right side of the colon (cecum ascending colon), it is mainly abdominal pain; If it occurs on the left side of the colon (descending colon sigmoid colon), blood in the stool is often present in addition to abdominal pain

Changes in bowel habits or stool characteristics, most of which are manifested as increased stool frequency, unformed or loose stools, blood and mucus in the stool, sometimes constipation or diarrhea alternates with constipation, stool thinning, pain in the middle and lower abdomen, the degree of severity varies, mostly dull pain or swelling pain, patients with right colon cancer often find abdominal masses, pay attention to whether there are systemic symptoms such as blood greed, emaciation, fatigue, edema, hypoproteinemia, tumor necrosis or secondary infection, patients often have fever.