Week 3: Inflammatory Bowel Disease Flashcards
Case 1 history

Case 1 additional history

Case 1 Labs

Case 1 colonoscopy

Case 2 history

Case 2 additional history

Case 2 labs

Case 2 contrast

Case 2 Colonoscopy

What is IBD?

What types of IBD are there?
Crohn’s Disease
Ulcerative Colitis

Other causes of intestinal inflammation
- Infections
- Medications (NSAIDs, Antibiotics)
- Ischemia
- Radiation
Proposed etiologies of IBD
- Genetic
- Infection (dysbiosis)
- immune dysfunction
- Environmental factors
- Intestinal barrier defect
Pathogenesis of IBD

IBD pathways

Genetic factors of IBD
- Genetic mutation in NOD-2 gene in 10-15% of patients with Crohn’s disease most common in Jews
*

Role of microbes

Epidemiology of IBD

Risk factors for IBD

A broad overview of how Ulcerative colitis and Crohn’s disease

Ulcerative colitis location of inflammation
Inflammation in the colonic mucosa where only the colon is involved
inflammation affects the rectum and extends proximally to affect a variable extent of colon

Ulcerative colitis duration of inflammation
Continuous inflammation
Forms of IBD that are associated with extraintestinal complications
Both
- Crohn’s Disease
- Ulcerative colitis
Way to remember ulcerative colitis
ULCCCERS
- Ulcers
- Large intestine
- Continuous/Colon cancer/ Crypt abscesses
- extends proximally, red diarrhea, sclerosing cholangitis

Crohns disease location
- chronic transmural inflammation
- may involve any part of the GI tract from oral to anus
- Typically affects the ileum and colon
Most common Crohn’s disease location
Typically affects the ileum and colon
Describe the distribution of Crohn’s Disease
- distribution tends to be focal, asymmetric or segmental (skipped lesions)
Crohn’s disease complications
frequently complicated by fistulas and perianal disease
Also
Associated with extraintestinal complications
Anatomic distribution of ulcerative colitis

Anatomic distribution of Crohn’s Disease

Gross histology of non-universal ulcerative coliiis

Crohn’s disease anatomic distribution frequency

Ulcerative colitis clinical presentation
- Diarrhea (small frequent BM)
- Blood stools
- Abdominal pain
Crohn’s Disease clinical presentation
- Diarrhea (less freq)
- Blood stools (less)
- Right lower quadrant abdominal pain and mass
- Obstructive sxs (decrease in bm)
- Intestinal fistulas and fissures
What is the most common extraintestinal manifestation of ulcerative colitis?
Skeletal (osteoarthritis, ankylosing spondylitis, sacroiliitis)
What are the skeletal extraintestinal manifestations of ulcerative colitis?
Skeletal (osteoarthritis, ankylosing spondylitis, sacroiliitis)
What are the ocular extraintestinal manifestations of ulcerative colitis?
- Uveitis
- episcleritis
- iritis
What are the biliary extraintestinal manifestations of ulcerative colitis?
- primary sclerosing cholangitis (PSC)
- It is rare for patients with UC to develop PSC but up to 90% of all patients affected by PSC will also be affected by UC
What are the cutaneous extraintestinal manifestations of ulcerative colitis?
- erythema nodosum
- pyoderma gangrenosum
- aphthous stomatitis
What are the general extraintestinal manifestations of ulcerative colitis?
- fatigue
- Fever
What are the adolescent or seen in children extraintestinal manifestations of ulcerative colitis?
- growth retardation
- delayed puberty
What is this?

- Left is pyoderma gangrenosum
- Right is erythema nodosum
Ulcerative colitis Dx is based on?

Labs for Ulcerative colitis

Endoscopy of UC

Endoscopy of Crohn’s Disease

Endoscopic spectrum of proctocolitis

Describe the appearances of Crohn’s Disease endoscopic feature

Histology of UC
Mucosal inflammation

Gross histology and histology of mild UC

Gross histology and histology of severe UC

Histology of Crohn’s disease
- Transmural inflammation
- Non-caseating granulomas
- Giant cells
- NEutrophilic inflammation of the crypts
Describe Crohn’s Disease histology granuloma

Describe Crohn’s Disease histology cross-section

Describe Crohn’s Disease histology
transmural process
Describe Crohn’s Disease histology fistula

Describe Crohn’s Disease histology enteric fistulae

Describe Crohn’s Disease histology enterocutaneous fistulae

Describe Crohn’s Disease histology perianal fistulae and abscess

Describe Crohn’s Disease histology perineal complications of Crohn’s disease

Describe how radiology can be used to identify IBD

UC radiology

Crohn’s radiology

What is this?

String sign in Crohn’s disease

What is this?

ileitis in Crohn’s Disease

What is this?

Gastro-duodenitis in Crohn’s Disease

Treatment of Crohn’s disease

Describe step-up therapy for Crohn’s disease

Describe surgical options for UC
Colectomy is curative for UC
Crohn’s Disease surgical options
- Surgery is to be avoided if possible
- High-rate of postoperative recurrence at the site of the resection
Summary of Crohns to UC

Case 2 recap
Ulcerative colitis

Case 1 recap
Crohn’s Disease
