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Intramural and subserosal echogenic foci on US in large-bowel intussusceptions: prognostic indicator for reducibility?

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Abstract

Background

In large-bowel intussusceptions, several US signs are known to indicate a lower likelihood of reducibility by enema. US can demonstrate echogenic dots or lines (foci) in the bowel wall, which might indicate an ischemic bowel.

Objective

To determine the presence of echogenic intramural and subserosal foci in large-bowel intussusceptions and to evaluate the degree of correlation with reducibility.

Materials and methods

Between 2001 and 2008, 74 consecutive US examinations were retrospectively evaluated by two pediatric radiologists for intramural and subserosal echogenic foci, or trapped gas, in the intussusception. The degree of correlation between the sonographic findings and reducibility was evaluated.

Results

Of 73 intussusceptions examined by US, 56 (76%) were reducible and 17 (23%) were not reducible. Out of 10 intussusceptions with intramural gas, 11 with subserosal gas, and 14 with intramural and subserosal gas, 8 (80%), 6 (56%), 9 (64%), respectively, were not reducible. The presence of intramural gas or subserosal gas or both predicted a lower chance of reduction, but with regard to the effect of these findings together, intramural gas was the only significant predictor.

Conclusion

Having intramural gas in large-bowel intussusception significantly decreases the chance of reduction.

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Acknowledgement

The project was supported by a grant from the National Center for Research Resources (no. UL1RR024986). The content is solely the responsibility of the authors and does not necessarily represent the official views of NCRR or the National Institutes of Health.

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Correspondence to Enno Stranzinger.

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Stranzinger, E., DiPietro, M.A., Yarram, S. et al. Intramural and subserosal echogenic foci on US in large-bowel intussusceptions: prognostic indicator for reducibility?. Pediatr Radiol 39, 42–46 (2009). https://doi.org/10.1007/s00247-008-1039-y

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  • DOI: https://doi.org/10.1007/s00247-008-1039-y

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