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Colon Cancer|metastasis|Colon Cancer Symptoms

Colon Cancer

Introduction Of  Colon Cancer

Colon Cancer- Colon, also known as large intestine, is an important posterior organ in the digestive system of vertebrates. The digestive system comprises mouth, food pipe called esophagus starting from the anterior part of mouth, the stomach, small intestine, large intestine and rectum. The food gets chewed in the mouth, passes through esophagus through rhythmic physical movements called peristalsis, undergoes further digestion by enzymes in the stomach and finally absorbed by the small intestine. The left-over waste products or undigested food stuff are sent out from the system by excretion through large intestine through an outlet called anus. 

What is colon cancer?

Human body consists of 15 trillions of cells which are primary basic units of life. Every day there is a massive decay of billions of older cells and generation of new cells for replacing the decaying cells. The synthesis of new cells which are similar in characteristics as that of older cells is a spontaneous process. A tissue is a group of similar cells with a specific function to do in metabolism. Different tissues, each with its own set of similar cells form integral parts of different organs in the body. All the organs/limbs of the body can perform well, only when there are active healthy cells in different tissues. During the course of time, older cells tend to wear out and their performance is laden with poor efficiency. While generating new cells, under certain unknown conditions, there occurs an internal failure within the system to create similar cells. The new cells may undergo a genetic anomalous change in their DNA and they turn into harmful cells. The sudden peculiar genetic change, called mutation, gives rise to unhealthy cells with weird characteristics of multiplying themselves uncontrollably and they do not die after some time as normal healthy cells do. Such harmful cells are called cancerous cells. The older malignant cells along with the continuous generation of new cancerous cells form as a pernicious heap of deadly cells called malignant tumours. After some time, with further generation of new harmful cells, they find the space insufficient at the site of their origin and invade into adjoining tissues or organs. The invasion of harmful cells affecting other healthy cells or tissues is called metastasis. When there occurs a synthesis of such faulty or defective cells in any part of large intestine, it is called “Colon Cancer”.

Colon Cancer

Symptoms of Colon Cancer

The indications of Colon Cancer go unnoticed in most of the cases, in initial stages. The general symptoms are:

  • Abdominal pain
  • Dark coloured stool
  • Bleeding in stool
  • Narrow stool
  • Diarrhea
  • Feeling of incomplete evacuation of bowels/constipation
  • Anemia due to loss of blood

In the cases of advanced stages of colon cancer the following signs may be noticed:

  • Weight loss
  • Inappetence
  • Nausea
  • Shortness of breath
  • Vomiting
  • Fatigue
  • Weakness

The medical treatment of colon cancer is finalized by doctors separately for each individual patient after finding out the location of cancer in the colon, the extent of metastasis and the specific conditions/probable causes of colon cancer that have affected individual victims.


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