Colon cancer symptoms
Early symptoms: stool frequency increased, not shaped or loose stools, bloody stools and mucus. Sometimes constipation or diarrhea alternating with constipation, stool thinner. Lower abdominal pain
Late symptoms: abdominal pain and irritation of the digestive tract, abdominal mass, bowel habits and changes in stool characteristics, symptoms of anemia and chronic toxin absorption and intestinal obstruction, intestinal perforation
Related symptoms: constipation with severe abdominal pain cancer cells retrograde disseminated blood in the stool, defecation, blood in the stool and mixed with blood and stool constipation with abdominal mass stool thinner like a pencil “
Colon cancer more common in the elderly, 30 to 69 years the vast majority, more men than women. Early symptoms and more obvious, advanced and common symptoms of patients with abdominal pain and gastrointestinal symptoms, abdominal mass, defecation habits and changes in stool characteristics, symptoms of anemia and chronic toxin absorption and intestinal obstruction, intestinal perforation.
Defecation habits or changes in fecal traits, the majority manifested as increased stool frequency, irregular or loose stools, stool bloody and mucus. Sometimes constipation or diarrhea alternating with constipation, stool thinner. Lower abdominal pain, varying degrees of severity, mostly painful or painful. Right-sided colon cancer patients often found abdominal mass. Note whether there is blood, weight loss, fatigue, edema, hypoproteinemia and other systemic symptoms, tumor necrosis or secondary infection, patients often have fever.
1. Abdominal pain and gastrointestinal symptoms
Most patients have varying degrees of abdominal pain and abdominal discomfort, such as abdominal pain, fullness of the right abdomen, nausea, vomiting and loss of appetite. Right colon cancer often reflects the pain to the upper umbilical; left colon cancer often reflex to the lower part of the umbilicus. Such as cancer through the intestinal wall caused by local inflammatory adhesions, or in the formation of local abscess after chronic perforation, the pain is the site of cancer where.
2. Abdominal mass generally irregular shape, texture hard, the surface was nodular.
Transverse colon and sigmoid colon cancer have a certain degree of early mobility and mild tenderness. Ascending colon cancer, such as colon cancer has penetrated the wall and surrounding organs adhesions, chronic perforation to form abscess or perforation of adjacent organs to form fistula, the tumor more fixed, the edge is not clear, tenderness significantly.
3. Defecation habits and changes in fecal traits
Necrosis of the formation of cancer ulcers and secondary infection as a result. Due to toxin to stimulate the colon to produce bowel habits change, bowel movements increased or decreased, and sometimes alternating diarrhea and constipation, bowel may have abdominal cramps, then ease. Such as lower cancer location or located in the rectum, anal pain may fall, poor defecation or tenesmus rectum irritation and other symptoms. Feces are often not formed, mixed with mucus, pus and blood, sometimes containing large amounts of blood often misdiagnosed as dysentery, enteritis, hemorrhoids bleeding.
4.Anemia and chronic toxin absorption symptoms
Necrosis of the surface of the formation of ulcers can have a sustained small amount of bleeding, mixed with blood and stool is not easy to cause the patient’s attention. However, anemia, weight loss, weakness and weight loss may occur due to chronic blood loss, toxin absorption and malnutrition. Late patients with edema, liver, ascites, hypoproteinemia, cachexia and other phenomena. If the cancer penetrates the stomach, the formation of fistula can also appear the corresponding symptoms.
5.Intestinal obstruction and intestinal perforation
The three main common symptoms of bowel habits change, bloody stools and intestinal obstruction. Intestinal obstruction can be manifested as a sudden onset of acute complete obstruction, but most of the chronic incomplete obstruction, abdominal distention is obvious, thinning stools like a pencil, the progressive progressive symptoms of complete obstruction. Of course, this distinction is not absolute, and sometimes only 1 or 2 clinical manifestations.
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Physical examination can be seen due to different duration. Early patients may have no positive signs; longer course of the abdomen palpable mass, but also thin, anemia, intestinal obstruction signs. If the patient intermittent abdominal mass, accompanied by colic and bowel sounds hyperthyroidism, should take into account the possibility of colon cancer caused by adult intussusception. Found on the left supraclavicular lymph nodes, liver, ascites, jaundice or pelvic mass are mostly late manifestations. Liver, lung, bone metastases are tenderness.
Palpable abdominal mass or nodular finger mass found mass, mass with multiple hard with tenderness, irregular shape. Anemia, weight loss, cachexia. Compression of venous return with lymph node metastasis can cause ascites, lower extremity edema, jaundice and other “
3、The diagnostic criteria
Rectal examination cannot be ignored as the inspection method, the general can understand the distance from the anus 8cm polyps, lumps, ulcers. Low sigmoid colon cancer by abdominal, rectal polytope touch. At the same time should pay attention to whether there is pelvic metastatic mass. Female patients feasible abdominal, rectal, vaginal triad.
The basic premise of treatment of colon cancer is to have a comprehensive and correct diagnosis of the tumor. Tumor diagnosis is based on a comprehensive history, physical examination, related equipment inspection concluded that the general preoperative diagnosis includes the tumor situation and the rest of the body. “
1. Tumor situation
1) tumor localization diagnosis:
That is, the site of a clear tumor, tumor and adjacent tissues and organs to understand the relationship, whether distant metastasis.
2) qualitative diagnosis of the tumor:
The qualitative diagnosis of the disease is to ask the following questions:
Is the disease a tumor?
a) Malignant or benign tumor;
b) Which type of malignant tumor.
c) The first two determine the scope of surgery and surgery; the latter will determine