Document Detail

The post-reduction donut sign.
MedLine Citation:
PMID:  7936786     Owner:  NLM     Status:  MEDLINE    
A donut-shaped intestinal structure in the lower right abdomen, observed during abdominal ultrasound investigation following nonoperative intussusception reduction, may create a diagnostic problem concerning differentiation from a residual or recurrent intussusception or underlying small bowel disease. In 30 cases of ileocolic intussusception an abdominal ultrasound examination was performed after reduction, the success of which was proven by radiological and clinical criteria. More than half of the examinations showed an aperistaltic "donut" in the ileocecal region which was similar to the target sign commonly seen in intussusception. Differentiation was possible according to the following two criteria: first, the diameter of the donut was smaller than that of the original target sign seen in these patients. Second, the donut consisted of a broad hypoechoic rim and an echogenic center, whereas the target was normally composed of multiple concentric rings. One third of the patients showed localized thickening of the walls of the distal ileal loops which did not cause diagnostic problems. All of the suspicious intestinal structures disappeared within the first 5 days following reduction. It is our opinion that the post-reduction donut correlates with significant edema of the ileocecal valve and does not represent a mechanical lead point or persisting residual intussusception.
W Rohrschneider; J Tröger; B Betsch
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Pediatric radiology     Volume:  24     ISSN:  0301-0449     ISO Abbreviation:  Pediatr Radiol     Publication Date:  1994  
Date Detail:
Created Date:  1994-10-28     Completed Date:  1994-10-28     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0365332     Medline TA:  Pediatr Radiol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  156-60     Citation Subset:  IM    
Department of Pediatric Radiology, University of Heidelberg, Germany.
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MeSH Terms
Ileal Diseases / therapy,  ultrasonography
Ileocecal Valve*
Intussusception / therapy,  ultrasonography*

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