Background
Crohn’s disease is a chronic granulomatous inflammatory disease of the gastrointestinal tract. According to epidemiological studies, the pathology is not uncommon, with 400,000–600,000 people affected in North America alone [1]. The disease occurs in males and females with the same prevalence; the peak age range of disease development is 15–25 years. The etiology is multifactorial but a familial tendency has been described, with an increased risk in first-degree relatives [1–3]. While many new clinical and surgical therapeutic strategies have been recently introduced, their success depends on an accurate assessment of the extension and severity of the disease.
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References
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Multiple Choice Questionnaire
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1)
Which signs are typical consequences of fibrotic involution due to the chronic inflammation of Crohn’s disease?
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a.
homogeneously enhancing bowel wall
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b.
enlargement of mesenteric lymph nodes
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c.
stratified enhancement of the bowel wall with a “target” appearance and fibrofatty proliferation
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d.
“cobblestone appearance”
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e.
mural ulcerations
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a.
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2)
Which is the best sequence to rule out the presence of the “comb sign”?
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a.
TSE T2 weighted single shot sequences
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b.
TSE T2 weighted sequences with fat-suppression
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c.
true FISP sequences
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d.
GR fat-suppressed T1 weighted sequences with the intravenous administration of a paramagnetic contrast agent
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e.
GR T1 weighted sequences with the intravenous administration of contrast agent and without fat suppression
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a.
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3)
Which are the main advantages of true-FISP sequences?
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a.
very fast imaging
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b.
GRE unspoiled sequences benefit from the residual transverse magnetization
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c.
assessment of the residual peristaltic activity of the pathological bowel segment
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d.
reduced motion artifacts
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e.
all of the above
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a.
1. c — 2.d — 3.e
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Iafrate, F., Ciolina, M., Pichi, A., Laghi, A. (2013). A 34-Year-Old Woman with Chronic Inflammation Due to Crohn’s Disease: Typical MRI Signs. In: Trecca, A. (eds) Atlas of Ileoscopy. Springer, Milano. https://doi.org/10.1007/978-88-470-5205-5_19
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DOI: https://doi.org/10.1007/978-88-470-5205-5_19
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