Problems of the large intestine are very common and patients should usually consult gastroenterologists for the proper diagnosis and treatment

1. Bleeding per rectum: Bleeding through the anal canal or rectum is usually the most common problem of the patients. It can be due to following reasons: 

A. Piles also known as Hemorrhoids: Hemorrhoids are dilated venous channels of the anal canal. They occur due to long term constipation or chronic cough or due to less fibre intake in the diet. Sigmoidoscopy or proctoscopy is required for diagnosis. Treatment options include medicines and high fibre intake, Injection therapy(Sclerotherapy) for stopping bleeding from piles and Stapler hemorrhoidectomy if the piles are large.

B.  Polyps: Polyps are soft tissue growths seen in the large intestine. They are usually silent but can present with bleeding or anaemia. Polyps usually grow slowly in size and large polyps can turn into cancer of large intestine also known as colorectal carcinoma. Colonoscopy is required for the diagnosis. The gastroenterologists can diagnose the presence of polyps by colonoscopy. Smaller polyps can be removed by polypectomy by gastroenterologists without the need for open surgery. However large polyps or those polyps with suspicion of cancer require surgery.

C. Large intestine Ulcer: They can occur due to early cancer, SRUS, Infections or drugs. They require colonoscopy for the diagnosis. The gastroenterologists usually take Biopsy from the ulcer to know the cause of the ulcer. The mere taking of biopsy does not mean cancer and biopsy samples are seen in the microscope for better diagnosis.

D. Ulcerative Colitis and Crohn s disease: Ulcerative colitis is one form of Inflammatory bowel disease (IBD). The other IBD is known as Crohn s disease. Whereas ulcerative colitis involves only large intestine, Crohn s disease can involve any part of the gastrointestinal tract including small intestine. Ulcerative colitis and Crohn s disease present with Loose stools(diarrhea), bleeding , abdominal pain, weight loss, Anemia and Perianal fissures and  fistula. The diagnosis of IBD is challenging and involves blood tests, CT Scan abdomen, Colonoscopy with biopsy and clinical history. Management includes Medicines which control the inflammation such as Pentasa, Rowasa, Mesacol etc. Severe disease requires additional drugs such as Azathioprine and Anti TNF sich as Infliximab and Adalimumab. Occasional cases require surgery such as those with tight stricture of the intestine, severe dilatation of Large intestine (also known as Toxic megacolon), excessive bleeding, the disease not responding to medical management, or presence of cancer with IBD.

E. Anal fissures: Cut in the anal skin (fissure) causes severe pain in the anal area during passing motions. It is usually due to constipation or straining. It is usually treated by Gastroenterologists initially by medicines and ointments. If the pain continues Surgery is required named as Lateral internal sphincterotomy (LIS).

2. Loose motions or Diarrhea: Excessive passing of liquid motions is known as diarrhea or commonly lose motions. It is usually due to Infections caused by contaminated food and water. It is usually self-limiting. Severe cases with dehydration require admission for IV fluids and antibiotics for the infection. Loose motions for more than 6 to 8 weeks is known as chronic diarrhea. It is evaluated by blood tests and colonoscopy. Usual causes include tuberculosis, celiac disease, ulcerative colitis, microscopic colitis, Malabsorption such as chronic pancreatitis and small bowel bacterial overgrowth.

3. Irritable bowel syndrome (IBS): IBS is very common and at least 20 to 30 percent of Indian patients suffer from it. Symptoms include altered bowel habits such as diarrhoea or constipation, abdominal pain which is usually relieved or increased by defecation. Weight loss or bleeding is not the feature of IBS. Few simple blood tests are required and good medicines are now available for IBS. Few cases may require colonoscopy to rule out alternative causes of the symptoms.

Understanding colonoscopy: Colonoscope is a flexible tube with a camera at its tip to see the inside of the large and small intestine. Bowel preparation is required at least 8 hours before the procedure so that the inside of the large intestine can be seen clearly without the interference of stools.colonoscopy is an OPD based procedure where the patients are discharged the same day. A colonoscopy helps in evaluation symptoms of the large intestine such as loose stools, bleeding and abdominal pain.

In Detail About Colorectal Disorders!

Colorectal surgery: How to be sure you need it?

Colorectal surgery is performed to repair damages that occur in the organs of the anus, rectum, and colon. The damage that takes place in these organs can be the result of problems with lower GI like diverticulitis (a condition wherein pouches known as diverticula in the colon wall become inflamed), cancer and inflammatory bowel disease (a group of intestinal disorders that bring about inflammation of the GI).

Who needs this surgery?

In general, colorectal surgery is an essential treatment option for ulcerative colitis, colorectal cancer, Crohn's disease (an inflammatory bowel disease that gives rise to inflammation of the gastrointestinal tract) as well as certain diverticulitis cases. In such cases, the intestinal tract undergoes major reconstruction.

There are also other bowel problems that may require surgery but not of a serious nature and these are anal fissures, hemorrhoids, bowel incontinence and rectal prolapse. Most of the surgical procedures will aid in repairing tears, get rid of blockages, or make tighter sphincter muscles (muscles that surround openings in the body).

Colorectal surgery is also performed in cases of pelvic floor disorders like rectocele (a condition in which the rectum bulges towards the vagina) and perineal hernia (a hernia that involves the pelvic floor).

At the same time, injury, ischemia or compromised blood supply and obstruction may require the performance of bowel surgery as well. Scar tissue and masses can form within the rectum, clogging the organ and preventing the normal discharge of feces from the body.

Problems like ulcerative colitis (an inflammatory bowel disease that leads to the development of ulcers in the colon as well as inflammation of the area) and diverticulitis can give rise to perforations in the rectum. Surgery is suggested in instances when drugs fail to treat the problem of ulcerative colitis.

Likewise, in the case of recurrent instances of perforations or complications in diverticulitis, surgery may be required to remove the portion of the colon affected.



Colorectal Surgery: How To Be Sure You Really Need it

Colon polyps are growths that are typically found in the large intestine. Although the causes behind the occurrence of colon polyps are not known, this condition is usually seen to affect adults.
These colon polyps might turn into colon cancer over a period of time; the development of cancer can happen over a number of years.
Colon polyps are usually symptomless; hence it becomes difficult to diagnose the condition. They are commonly found as additional results of screening tests for colon cancers. Screening tests are conducted when there is a suspicion of a disease but it displays no significant symptoms. The symptoms can only be visible if the polyps are enlarged. Typical symptoms include:
Rectal bleeding.
Changes in bowel conditions such as diarrhoea and constipation.
Changes in urination patterns.
Change in appearance of stool.
As the presence of most polyps becomes evident only during colon cancer tests, it is recommended that regular tests for colon cancer be conducted for adults over the age of 50. Some of these tests include:
Colonoscopy: This is highly recommended for detecting colon polyps. A small tube used for viewing is inserted into the colon by the doctor.
Flexible Sigmoidoscopy: It is similar to colonoscopy with the only difference being that the tube is smaller.
Computed Tomographic Colonography (CTC): Also known as virtual colonoscopy, various computer systems and X-rays are used to create a detailed picture of the colon so that the doctor can search for polyps.
The size of the colon polyps helps to identify if the polyp is cancerous or not. Chances of the polyp being cancerous are high if the size of the polyp is higher than 1 cm or 0.4 inches. Hyperplastic polyps (smaller polyps) do not become cancerous and hence, do not need to undergo a colonoscopy. Another form of polyp is the sessile polyp which is usually a flat growth without a stalk and grows on the inner wall of the colon. Similar to other polyps, these polyps can be found and removed using a colonoscopy or a sigmoidoscopy.

Causes and Symptoms of Colonic Polyps

Screening for cancer of the colon or large intestine and rectum is a proven way of saving a person from the impacts of colorectal diseases. This is partly because colon cancer is something that can be prevented if detected at an early stage and the polyps which may advance to cancer are removed properly. Thus if you are turning 50 soon, be prepared to present yourself for a screening colonoscopy that will help you ensure good health and well-being. It may sound uncanny, but do you know that 50,000 people across the world die from colorectal cancer every year, and it is ranked second in terms of cancer-centric deaths.

Understanding the importance of having colonoscopy
You may wonder how a painful, invasive, embarrassing, uncomfortable and time-consuming health test may be called a present. There are reasons enough. A screening colonoscopy is able to expose a cancerous tumour that's presently under way and cast light on the chances and risk factors that may precede it. When you choose to intervene early, you have the power to nip those risks at their budding stage, much before those malicious cells become malignant.

Spreading of the colorectal cancer
Your large intestine is really a big and last organ of the gastrointestinal system where the small intestine discontinues. Its primary function is to remove the water out of the leftover solids of digestion and get rid of them in the form of stool. Cancer may start to develop anywhere within the tube that expands 5 feet long and squares the vacant area of the abdomen. The large intestine expands up towards the right side, i.e. the ascending colon and then turns left through the liver, i.e., the transverse colon, bending down right at the spleen on its left, i.e. descending colon and loops to the middle, i.e., the sigmoid colon before it runs across the rectum and ends at the anus.

People who need a colonoscopy
To simplify matters, it can be said that all adults are at a potential risk of the colorectal cancer, including those people who lead a healthy life. But some people are at a higher risk. Those individuals have a specific gene mutation that predisposes them to develop into numerous polyps. The risk is also high with people who are first-degree relatives of a person diagnosed with cancer before the age of 50. People with Ulcerative colitis, various types of inflammatory bowel diseases and Crohn's disease are also at a higher risk.

Colorectal cancer is a serious ailment and screening colonoscopy is a feasible means of detecting any polyps that may be cancerous in the future. Speak with a reputed gastroenterologist today to stay ahead of the disease.

When Should You Start Having Colonoscopies?

Colorectal surgery is the broad term for surgical procedures performed on the colon, the rectum and the anus. There are various different surgical procedures which fall under colorectal surgery and these are used to treat a vast array of disorders, such as:
1. Anal cancer
2. Colorectal cancer
3. Severe complications related to constipation
4. Anal injuries
5. Inflammatory conditions of the gastrointestinal tract
6. Congenital defects

Procedures
The surgeries under colorectal surgery are performed after diagnostic tests such as proctoscopy, sigmoidoscopy and defecating proctography. The most common diagnostic test is colonoscopy. These help to identify the origin and nature of the problem and decide which surgical procedure is to be followed. The procedures under colorectal surgery are as follows:

Colectomy
This procedure involves removal of a section of the large intestine. This is known as partial colectomy. In extreme cases, such as advanced cancer or severe gastrointestinal infection, the entire colon is removed and this is called total colectomy. Sometimes, the rectum is also taken out along with the colon and this is called proctocolectomy.

Colonic polypectomy
An abnormal growth of tissues in the inner lining of an organ is known as a polyp. Colonic polypectomy is done to eliminate polyps from the colon and rectum before they become malignant. This can be done endoscopically. Surgery is required in case of large polyps.

Strictureplasty
Chronic or repeated bowel inflammation causes scar tissue to accumulate in the large intestine. This results in the narrowing of the colon. Stricturoplasty removes the scar tissue so that proper flow of digestive contents is resumed.

Colostomy or ileostomy
A damaged section of the colon is removed and the shortened intestine is then attached to another opening (stoma) in the anterior wall of the abdomen.

Hemorrhoidectomy
This surgical process is used for swollen hemorrhoids or blood vessels, which form in the anal canal. Hemorrhoidectomy is extremely effective in removing hemorrhoids, but the surgery also involves a number of complications.

Anoplasty
Anoplasty or imperforate anus correction is done to correct birth defects in the rectum and the anus. The structural flaw does not allow the stool to pass properly from the rectum and so it is repaired through surgery.

All About Colorectal Surgery

If you notice blood in the stool or the toilet bowl, it could be a case of rectal bleeding. There are many reasons why rectal bleeding can occur, the most common one being haemorrhoids. If the rectal bleeding is not significant then it is not a cause for concern. But if you lose a lot of blood then it can be a major problem.

What are the signs?

The most obvious one, in this case, is the presence of blood in your stool. But it's not just the presence of blood that is important here, the colour of the blood is also a very important indicator of what is wrong.

Black colour indicates that you are bleeding from the upper region of the small intestine

A bright red colour is an indication of the blood loss from the lower part of the gastrointestinal tract   rectum or colon

Dark red indicates that the bleeding is taking place at the initial region of the colon

Some other symptoms you may experience are  

Confusion

Pain in the rectum

Stomach cramps

A sensation of dizziness

Causes of rectal bleeding

Causes of rectal bleeding can be divided into mild and serious. 

Mild causes  

Constipation 

Small tears in the anal lining (anal fissures)

Haemorrhoids

Small growths of tissue in the rectum or colon

Serious causes  

Cancer of the colon and anus

Inflammatory bowel disease

An infection of the intestine such as salmonella

How is it treated?

If you lose a lot of blood, then it is a medical emergency. You should rush to the doctor if you experience the following   fainting, intense pain in the stomach, confusion, and rapid breathing.

The doctor will prescribe treatment based on the cause of your rectal bleeding. For example, if the cause is haemorrhoids then warm baths will help soothe the pain. If the haemorrhoids are large then invasive methods such as laser treatments and surgery are prescribed. 

Or if it is constipation then stool softeners are a good option. In addition, you may have to eat a high fibre diet and exercise regularly to normalize your bowel movements. 

Rectal bleeding can be a minor inconvenience or a major problem depending on the cause. So it is best to consult a doctor and seek immediate treatment.

Rectum Bleeding - How To Administer It?

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