Colon cancer is a common malignant tumor of digestive tract system and has great threaten to our health. In early stage, colon cancer has no obvious symptoms or just has the symptoms before lesion cancerous change, while as time goes by, a series of symptoms and physical signs would appear.
(1) Abdominal pain and symptoms of digestive tracts: the vast majority of colon cancer patients have different degree of abdominal pain or abdominal discomforts, like abdominal hidden pain, left side abdominal distention, nausea, vomiting, loss of appetite and so on. After food feeding, the symptoms may get worse and sometimes may company with intervallic diarrhea or constipation, which are easily confused with the common diseases of right lower quadrant, like chronic appendicitis, ileocecal tuberculosis, ileocecal junction segmental enteritis or lymphoma. It is generally believed that the symptoms of rightward abdomen colon cancer manifest as pain in the part above navel; while symptoms of leftward abdomen colon cancer manifest as pain in the part under the navel. If cancer tumor penetrates intestine wall, it may cause local inflammatory adhesion or local abscess after the formation of chronic perforation. The location of pain is just the place where tumor locates.
(2) Abdominal mass: it is usually irregular and in hard texture; its surfaces manifest nodosity; during early stage of transverse colon cancer and sigmoid colon cancer, abdomen mass has a certain activity and may cause pain even press it slightly.
(3) Changes of bowel movement and stool shape: this is due to ulcer or infection caused by tumor necrosis. Because toxin stimulates colon to change bowel evacuation habit: increase or reduce the numbers for bowel evacuation; alternate occurrence of diarrhea and constipation, or occurrence of abdominal colic before bowel evacuation and after that, it would alleviate. If the position of tumor is under or just localizes rectum, then some rectum irritation may appear, like anus bearing-down pain, difficult defecation. Dejecture often manifests as shapeless like pasty, and is mixed with mucus and bloody pus. Sometimes, large amount of blood content may mislead the diagnosis as dysentery, enteritis, bleeding of hemorrhoid and so on.
(4)Anaemia and absorption of chronic toxins: when the surface of tumor necrosis appears ulcer, the colon may suffer from continuously capillary hemorrhage. Blood being mixed with dejecture may fail to catch the attention of colon cancer patients. However, anaemia, emaciation, adynamia or weight loss may be caused due to chronic blood loss, toxin absorption or malnutrition. Advanced stage colon cancer patients may suffer from edema, hepatomegaly, ascites, hypoproteinemia, cachexia and so on. If tumor penetrates stomach or bladder or other organ and cause internal fistula, then similar symptoms shall be also caused.
Now you may have certain knowledge about the symptoms of colon cancer, if there is any further questions, welcome to Modern Cancer Hospital Guangzhou for consultation. Being well informed of the symptoms of colon cancer is so helpful for detection and timely treatments, also the therapeutic effects can be remarkably improved and the survival time would be prolonged as well.