Question:

Upon MRI examination, the imaging characteristics of umbilical concretions are:
1. Hypointense on all pulse sequences.
2. Variable with intense enhancement following gadolinium administration.
3. Hyperintense on all pulse sequences.
4. T1-weighted hypointense and T2-weighted hyperintense.
5. T1-weighted hyperintense and T2-weighted hypointense.





Answer:

The correct answer for the question "Upon MRI examination, the imaging characteristics of umbilical concretions are:" is:

1. Hypointense on all pulse sequences.



Explanation
1. Hypointense on all pulse sequences. [As umbilical concretions are composed of devitalized tissue, they should show low signal intensity on all MR sequences.]

2. Variable with intense enhancement following gadolinium administration.

3. Hyperintense on all pulse sequences.

4. T1-weighted hypointense and T2-weighted hyperintense.

5. T1-weighted hyperintense and T2-weighted hypointense.



From the manuscript:
Umbilical Concretion
Radiology Case. 2011 Apr; 5(4):25-31


This article belongs to the GI section.




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From the manuscript

Umbilical Concretion

Free full text article: Umbilical Concretion

Abstract
Umbilical concretion is a rarely encountered benign entity. Concretions typically form within an umbilical cleft which is unusually deep and consist of keratinaceous and sebaceous material. Lack of attention to umbilical hygiene usually plays a role in their formation. Concretions are generally asymptomatic and may only present clinically when complicated by inflammation or infection. Their appearance on imaging studies may be problematic for the radiologist given their rarity, particularly in the setting of a known or suspected intra-abdominal malignancy.






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