What does an inflammatory bowel disease diagnosis mean? Mayo Clinic expert explains

ROCHESTER, Minnesota — Inflammatory bowel disease, or IBD, is an umbrella term for a group of chronic conditions that cause inflammation and swelling in the digestive tract. It primarily includes two conditions: ulcerative colitis and Crohn's disease. While both involve inflammation, they affect different parts of the gastrointestinal tract and behave differently over time, explains Kellie Mathis, M.D., a colon and rectal surgeon at Mayo Clinic.

Symptoms of both categories of IBD usually include belly pain, diarrhea, rectal bleeding, extreme fatigue, Dr. Mathis says. Ulcerative colitis typically affects the colon and rectum and  leads to the development of sores called ulcers. Crohn's disease primarily affects the small intestine and often involves the deeper layers of the digestive tract and weight loss.

"Some people experience mild illness, while in others, the disease can be debilitating and lead to life-threatening complications," Dr. Mathis adds.

Diagnosing IBD involves a combination of tests and procedures. To confirm the diagnosis, your care team may recommend:

• Blood tests to check for signs of inflammation, anemia or infection.
• Stool studies to rule out infections and detect markers of inflammation.
• Endoscopic procedures, such as:

• Colonoscopy, which allows doctors to view the entire colon and take biopsies, or flexible sigmoidoscopy, used when the colon is too inflamed for a complete colonoscopy.
• Upper endoscopy, if symptoms involve the upper GI tract.
• Capsule endoscopy, where you swallow a small camera to examine the small intestine.
• Balloon-assisted enteroscopy, which is used to explore deeper parts of the small bowel.

A biopsy, a small tissue sample taken during endoscopy, is essential to confirm the diagnosis and distinguish IBD from other causes of inflammation, Dr. Mathis says.

"Most people with IBD are treated first with medications. These include anti-inflammatory drugs, immune system suppressors and biologics that target specific pathways in the immune response," she explains. "However, surgery can become necessary when medications are no longer effective, not well tolerated or when complications arise."

In ulcerative colitis, a colectomy, removal o the entire colon and rectum, is performed when medications fail or when complications like perforation, obstruction, or cancerous changes occur, Dr. Mathis says. An internal pouch is made and surgically attached to the anus to allow the passing of waste without an external bag. Sometimes, an internal pouch isn't possible; in these cases, a permanent opening is surgically created in the abdomen, called an ileostomy, she explains.

"Up to two-thirds of people with Crohn’s disease will require at least one surgery in their lifetime," Dr. Mathis says. "During this operation, the surgeon removes the damaged part of the digestive tract and reconnects the healthy sections. Surgeons aim to preserve as much of the healthy intestine as possible. Surgery also may be needed for issues such as fistulas, bowel obstructions or perforations."

Surgical decisions are individualized and should be made in collaboration between the patient, gastroenterologist and surgeon, she adds. Factors that influence the decision include:

• Severity and location of disease.
• Response to medications.
• Overall health and nutritional status.
• Quality of life and personal preferences.
• In urgent situations, such as a perforated bowel or severe bleeding, surgery may be performed immediately. But in most cases, there's time for thoughtful discussion and planning, Dr. Mathis says.

"If you're facing surgery for IBD, know that you're not alone — and you're not without options. The goal of surgery is always to improve your quality of life, reduce symptoms and prevent complications," Dr. Mathis says. "Seek care from centers like Mayo Clinic that are well versed in IBD treatment and that approach care in a collaborative, compassionate way, tailoring the treatment plan to your unique needs.

"Patients should feel empowered to ask questions and be part of the decision-making process."

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Media contact:

• Sharon Theimer, Mayo Clinic Communications, newsbureau@mayo.edu