Recnac

What is Colorectal Carcinoma?

Colorectal cancer or colorectal carcinoma is a cancer of the colon or the rectum. Colon cancer and rectal cancer are 2 distinct forms of cancer, but have many similarities.

Before we delve into the details, a basic understanding of the digestive system is essential. The main function of the digestive system is to consume food, absorb its nutrients and excrete the waste products. Food is consumed through the mouth. It is chewed, swallowed and passed down to the stomach. In the stomach it is further broken down by the hydrochloric acid and released into the small bowel. Most of the nutrients are absorbed in the small intestine.

The remaining food materials, then pass into the colon, which absorbs the remaining nutrients and water from the remaining food. It also serves as a storage area for fecal matters. The feces move from the colon into the rectum, the terminal 6 inches of the digestive system and pass out of the body through the anus.

The colon starts at the end of the small intestine, on the right lower quadrant of the abdomen immediately after the ileum. It loops around the top of the abdomen and come down again to go into the rectum, which is in the lower part of the pelvis before opening in the perineal region to form the anus.

Colorectal cancers often start as a benign lesion called polyps, which forms in the inner lining of the colon and rectum. It further grows bigger. While not all polyps are cancer-forming, a certain group of polyps known as adenoma are precancerous lesions. An effective method to prevent colorectal carcinoma is to remove these lesions early. It is recommended that anyone with a strong history of colorectal carcinomas in the family to attend annual colonoscopy after the age of 50 years to detect and remove the precancerous adenomatous lesions

Image source.

writershibe

About writershibe

writershibe is a final year medical student with a flair for writing.

writershibe

Top Posts | Oncology

Liver Cancer: A Comprehensive Overview & Treatment Options

The liver is a crucial organ in the human body that has multiple roles. Although it is considered to be part of the digestive system, it has other important functions as well. This includes but is not limited to: “detoxification of metabolites, protein synthesis, and production of digest ... ...

Osteosarcoma - Never Disregard a Chronic Sprain in a Child

Osteosarcoma originates from bone-forming cells which are mesenchymal in origin. Osteosarcoma is a very common bone tumor and it is highly malignant. It is common among children and younger adults. The exact etiology causing osteosarcoma is idiopathic. One predisposing factor is rapid bone growth, ...

Drug Shortage Crisis for Cancer Patients

Paclitaxel, which is a generic version of intravenous drug Taxol, has now joined the shortage list compiled by the American Society of Health System Pharmacists. This drug joins the list of 196 drugs. It is unclear how many cancer patients this puts at risk. There are plans to have an update on thi ...

Occult Killer – Renal Cell Carcinoma (RCC)

In adults, renal cell carcinoma (RCC) accounts for approximately 90 to 95% of neoplasms arising from the kidney. Hence, it can be considered the most common type of kidney cancer. Renal cell carcinoma stems from the lining of the proximal convoluted tubule, which are very small tubes in the kidney ...

Men Can Develop Breast Cancer, Too

Breast cancer is usually considered a condition that only women can develop, but men can also be affected. According to statistics, about 2,350 men will be diagnosed with breast cancer in the United States in 2015.This type of cancer is a rare cancer that can occur at any age, but it is most common ...

How to Recognize the Symptoms of Brain Tumors

Brain cancer is a tumor on the brain or on nearby tissue such as the membranes, pituitary gland, pineal glad or cranial nerves.  Like many cancers, brain tumors develop when healthy cells mutate in their DNA.  These mutations accelerate the growth of cells and increase their division rate ... ...

2 Important Ways to Fight Cancer

One in eight deaths in the U.S. is due to cancer. It is estimated that 77% of all cancers that are diagnosed in U.S. are in people 55 years of age or older. Breast cancer seems to be the highest diagnosed type of cancer in women and lung cancer is the highest in men. More than 15,000 people di ... ...

Thyroid Cancer And Treatment

The thyroid is a wing-shaped gland at the base of the throat with a right and left lobe with a small piece of tissue called an isthmus connecting the two. The gland is usually the size of a quarter, and if it is healthy, it will not be detectable from touching one's throat. The thyroi ... ...