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Crohn Disease Updated 4/2011

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BASICS

  • Description
  • Epidemiology
  • Risk Factors
  • Pathophysiology
  • Etiology
  • Associated Conditions

DIAGNOSIS

  • Signs and Symptoms
  • Tests
  • Differential Diagnosis

TREATMENT

  • Medication (Drugs)
  • Additional Treatment
  • Complementary and Alternative Medicine
  • Surgery

Ongoing Care

  • Follow-Up Recommendations
  • Diet
  • Patient Education
  • Prognosis
  • Complications
The following is an excerpt....
BASICS

Description

Idiopathic inflammatory disease of the alimentary tract that may present anywhere in the GI tract; most commonly found in the terminal ileum (60%), but may be limited to the colon in 15–20%, proximal small bowel 10%:

  • Transmural disease
  • May involve multiple regions of the intestine in between normal sections (skip lesions)

Epidemiology

Incidence
  • Annual incidence of 3–7 cases per 100,000
  • In US, more common in whites
  • Predominant age: 15–25 years; 2nd, smaller peak in ages 55–65 years
  • Female > Male
  • 2–4 × increased risk in Ashkenazi Jewish ethnicity
Prevalence

20–100 per 100,000

Risk Factors

Cigarette smoking (2 × higher risk in smokers)

Genetics
  • 15% of patients have 1st-degree relatives with inflammatory bowel ...

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See Also
Images >
FIG. 2.62. Crohn disease. A: Fat-suppressed T2-weighted image of lower abdomen demonstrates thickening and increased signal intensity of left colon (arrow) in patient with active Crohn disease. B: Non–fat-suppressed coronal HASTE image of same patient as (A) demonstrates colon wall thickening (arrow), but lack of fat suppression limits assessment of edema and fluid.Credit: John R. Leyendecker, Jeffrey J. Brown, Practical Guide to Abdominal and Pelvic MRI. Philadelphia: Lippincott Williams & Wilkins, 2004.
Procedures & PT >