Colon, or colorectal, tumor is tumor that instigates in the big intestine (colon) or the rectum (end of the colon). that begins in the colon is known as , and cancer that begins in the rectum is known as rectal cancer. There is no particular cause of colon tumor. Almost all colon cancers instigate as noncancerous (benign) polyps, which gradually develop into tumor. Symptoms normally comprise rectal bleeding and anemia which are occasionally related to weight loss and changes in bowel habits.

Types of colon cancer are:

  • Adenocarcinomas

    Adenocarcinomas are the most general kind of colon tumors and this originates in the glands. It accounts for about 90-95 percent of all colon cancers and can be divided into two sub categories, mucinous and signet ring cell.

  • Leiomyosarcomas

    This kind of colon tumor occurs in the smooth muscle of the colon. Leiomyosarcomas account for less than 2% of colon cancers and have a quite high chance of metastasizing.

  • Lymphomas

    Colorectal lymphomas are uncommon and are more likely to begin in the rectum than in the colon. However, lymphomas that start anywhere else in the body are more prone to spread to the colon than to the rectum.

  • Melanomas

    This type of colon cancer is uncommon. Generally, it results from a melanoma that started somewhere else and then reaches the colon or rectum. Melanomas account for less than 2 percent of colorectal cancers.

  • Neuroendocrine Tumors

    Neuroendocrine tumors are divided into two major categories: aggressive and indolent. Big cell and small cell neuroendocrine tumors are considered aggressive, while carcinoid tumors are considered indolent.

Numerous colon cancer treatment options are accessible for colon cancer, together with surgery, chemotherapy, and radiation. Doctors use number of tests to identify cancer and to detect if it has metastasized. Options are as follows:

  • Colonoscopy

    This experiment permits a doctor to look inside the whole rectum and colon while a patient is sedated. If colon cancer is there, a comprehensive analysis that precisely describes the position and spread of the cancer may not be possible until the lump is surgically removed.

  • Biopsy

    A biopsy is the removal of a small amount of tissue for test under a microscope.

  • Blood test

    Because colon tumor frequently bleeds into the large intestine or rectum, people with the disease may become weak.

  • Magnetic resonance imaging (MRI)

    An MRI uses magnetic fields, not x-rays, to generate comprehensive images of the body. MRI is the most excellent imaging test to find where the colon cancer has grown.

  • Ultrasound

    Ultrasound is a process that uses sound waves to generate an image of internal body organs to identify whether the cancer has spread.