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Tutorial title - Intestines - Inflammatory Bowel Disease

Q: What are the macroscopic features of Crohn Disease and Ulcerative Colitis?

Crohn Disease : Bowel region: Ileum ± colon Distribution: Skip lesions Stricture: Yes Wall appearance: Thick Ulcerative Colitis : Bowel region: Colon only Distribution: Diffuse Stricture: Rare Wall appearance: Thin

Q: Describe the microscopic inflammation and pseudopolyps in Crohn Disease and Ulcerative Colitis.

Crohn Disease : Inflammation: Transmural Pseudopolyps: Moderate Ulcerative Colitis : Inflammation: Limited to mucosa Pseudopolyps: Marked

Q: How do ulcers and lymphoid reaction differ between Crohn Disease and Ulcerative Colitis?

Crohn Disease : Ulcers: Deep, knife-like Lymphoid reaction: Marked Ulcerative Colitis : Ulcers: Superficial, broad-based Lymphoid reaction: Moderate

38 important questions on Tutorial title - Intestines - Inflammatory Bowel Disease

What are the clinical features of ulcerative colitis in inflammatory bowel disease?

Relapsing disorder; attacks of bloody diarrhea with expulsion of stringy, mucoid material.
Lower abdominal pain and cramps temporarily relieved by defecation.
Colectomy cures intestinal disease, but extraintestinal manifestations may persist.

What are the clinical features of Chron disease related to bowel symptoms?

Diarrhea, fever, and abdominal pain
Right lower-quadrant pain and fever
Periods of disease activity typically are interrupted by asymptomatic interval

What are the extraintestinal manifestations of Chron disease?

Extraintestinal manifestations include uveitis, migratory polyarthritis, sacroiliitis.

What are the macroscopic features of Crohn Disease and Ulcerative Colitis?

Crohn Disease:
- Bowel region: Ileum ± colon
- Distribution: Skip lesions
- Stricture: Yes
- Wall appearance: Thick
Ulcerative Colitis:
- Bowel region: Colon only
- Distribution: Diffuse
- Stricture: Rare
- Wall appearance: Thin

What are the clinical features of ulcerative colitis regarding haematochezia and passage of mucus or pus?

Haematochezia: Common
Passage of mucus or pus: Common

Describe the microscopic inflammation and pseudopolyps in Crohn Disease and Ulcerative Colitis.

Crohn Disease:
- Inflammation: Transmural
- Pseudopolyps: Moderate
Ulcerative Colitis:
- Inflammation: Limited to mucosa
- Pseudopolyps: Marked

How does Crohn's disease affect the small-bowel and upper-gastrointestinal tract?

Small-bowel disease: Yes
Can affect upper-gastrointestinal tract: Yes

What are the dermatologic manifestations of Inflammatory Bowel Disease?

Dermatologic manifestations include erythema nodosum, pyoderma gangrenosum, and oral ulcers (e.g., aphthous stomatitis).

How do ulcers and lymphoid reaction differ between Crohn Disease and Ulcerative Colitis?

Crohn Disease:
- Ulcers: Deep, knife-like
- Lymphoid reaction: Marked
Ulcerative Colitis:
- Ulcers: Superficial, broad-based
- Lymphoid reaction: Moderate

What are the typical symptoms of Inflammatory Bowel Disease (IBD)?

Abdominal pain
Diarrhea
Fever
Fatigue
Rectal bleeding
Weight loss
Anorexia
Nausea

What are the common biochemical features in ulcerative colitis?

Anti-neutrophil cytoplasmic antibodies: Common
Anti-saccharomyces cerevisiae antibodies: Rarely

List the hepatobiliary manifestations of Inflammatory Bowel Disease.

Hepatobiliary manifestations are primary sclerosing cholangitis, fatty liver, autoimmune liver disease, and cholelithiasis.

What are the clinical features of Crohn Disease and Ulcerative Colitis regarding perianal fistula and toxic megacolon?

Crohn Disease:
- Perianal fistula: Yes (in colonic disease)
- Toxic megacolon: No
Ulcerative Colitis:
- Perianal fistula: No
- Toxic megacolon: Yes

What is Inflammatory Bowel Disease and what does it cause?

Inflammatory Bowel Disease is a chronic intestinal disease that causes inflammatory destruction of the small intestines. It involves environmental and genetic factors and impaired immune response.

What ophthalmologic complications are associated with Inflammatory Bowel Disease?

Ophthalmologic complications include episcleritis, scleritis, uveitis, iritis, and conjunctivitis.

What are the common physical examination findings in IBD?

Abdominal tenderness
Palpable mass
Perianal disease
Extra-intestinal manifestations: Mouth, Skin, Eyes, Joints, Liver

Describe the pathological features of Crohn's disease regarding granulomas and fissures.

Granulomas: Yes, but rarely in mucosal biopsies
Fissures and skip lesions: Common

Compare the presence of granulomas and fistulae/sinuses in Crohn Disease and Ulcerative Colitis.

Crohn Disease:
- Granulomas: Yes (~35%)
- Fistulae/sinuses: Yes
Ulcerative Colitis:
- Granulomas: No
- Fistulae/sinuses: No

What are the causes of Inflammatory Bowel Disease?

Causes include:

environmental factors
genetic predisposition
impaired or marged immune response

What are the common laboratory and radiographic findings in IBD?

Anemia
Leukocytosis
Elevated ESR/CRP
Guaiac-positive stool
Small bowel disease
Fistulas
Strictures

What is the occurrence of abdominal mass and colonic obstruction in ulcerative colitis?

Abdominal mass: Rare
Colonic obstruction: Rarely

Describe the hematologic manifestations of Inflammatory Bowel Disease.

Hematologic manifestations include anemia of chronic disease, iron-deficiency anemia, clotting abnormalities, abnormal fibrinolysis, thrombocytosis, and thromboembolic events.

What is the are the complications of Crohn Disease and Ulcerative Colitis disease prevalence after treatment?

Crohn Disease:
- Malignant potential: With colon involvement
- Recurrence after surgery: Common
Ulcerative Colitis:
- Malignant potential: Yes
- Recurrence after surgery: No

What is the epidemiology of Inflammatory Bowel Disease?

The epidemiology of Inflammatory Bowel Disease shows it affects adolescents or young adults. It is a condition with significant impact on this age group.

What renal manifestation is associated with Crohn disease?

The renal manifestation associated with Crohn disease is calcium oxalate nephrolithiasis.

What are the long-term complications of IBD?

Malnutrition and malabsorption
Anemia
Perforated bowel
Fistula, strictures, and abscesses
Eye soreness/redness
Swelling/pain in joints
Osteoporosis
Increased risk of colon cancer

How common are extraintestinal manifestations and small-bowel obstruction in Crohn's disease?

Extraintestinal manifestations: Common
Small-bowel obstruction: Common

How do fibrosis and serositis differ in Crohn Disease and Ulcerative Colitis?

Crohn Disease:
- Fibrosis: Marked
- Serositis: Marked
Ulcerative Colitis:
- Fibrosis: Mild to none
- Serositis: Mild to none

Describe the types of Inflammatory Bowel Disease.

Types include:

Crohn's disease (Regional Enteritis):

More severe
Affects any part of GIT commonly terminal ileum, ileocecal valve and cecum
Skip lesions
Transmural lesions.

Ulcerative Colitis:

Less severe
Limited to colon & rectum
Continuous lesion
Extends only to the mucosa and submucosa (superficial lesions)

Identify the musculoskeletal manifestations of Inflammatory Bowel Disease.

Musculoskeletal manifestations include migratory polyarthritis and sacroiliitis.

What are the features of crypts in ulcerative colitis?

Distorted crypt architecture
Cryptitis and crypt abscesses

What are the clinical features of Crohn's disease?

Clinical features include:

diarrhea alternating with constipation
bleeding
bloating

What are the extra-intestinal manifestations of Crohn's disease?

Extra-intestinal manifestations include:

polyarthritis
features of autoimmune hepatitis
anemia of chronic illness
inflammation of sclera (scleritis)

What are the morphological features of Crohn's disease?

Morphological features include:

skip lesions
aphthous ulcer
cobblestone appearance
creeping fat

What are the microscopic features of Crohn's disease?

Microscopic features include:

crypt abscess (cluster of neutrophils)
distortion of mucosal architecture
paneth cell metaplasia
noncaseating granulomas

What are the morphological features of Ulcerative Colitis?

Morphological features include:

backwash ileitis
broad-based ulcers

What are the microscopic features of Ulcerative Colitis?