Citation, DOI, disclosures and article data
Citation:
Jones J, Knipe H, Silverstone L, et al. Transient intussusception. Reference article, Radiopaedia.org (Accessed on 20 Apr 2024) https://doi.org/10.53347/rID-15584
Disclosures:
At the time the article was last revised Henry Knipe had the following disclosures:
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
These were assessed during peer review and were determined to
not be relevant to the changes that were made.
View Henry Knipe's current disclosures
Transient or uncomplicated intussusception is known to occur in both adults and children and can be considered physiological. Given the transient nature of the condition, it is probably underdiagnosed. The main factors that distinguish transient from intussusceptions requiring surgical intervention are absent clinical symptoms, enteroenteric type, short length, and absent visible lead point 9.
Intussusceptions are often seen on CT imaging in patients with and without abdominal symptoms 9,10. Asymptomatic patients are, unsurprisingly, more likely to have transient/uncomplicated intussusception not requiring surgical intervention 9.
Etiology
The exact etiology of intussusceptions without a lead point is not clear 4.
Cannabinoids have been associated with single or multiple transient jejunal Intussusceptions 5.
CT
The appearance of transient intussusceptions on ultrasound typically the bowel-within-bowel (+/- meseneteric fat and/or vessels) or a complex soft tissue mass 4,10. A target sign may be present.
CT features that favor transient intussusception over intussusception requiring surgery include:
transitory (if multiple phases are required) 4
jejunal location ref
enteroenteric intussusception 9
multiple 9 although are frequently solitary 7
length <3.5 cm 9,10, although two-thirds of transient intussusceptions are ≥3.6 cm 9
absence of visible lead point 9
small diameter (due to lack of lead point tumor) 4,9
absence of small bowel obstruction 4,9,10
absense of mural thickening/edema and mesenteric vascular engorgement 10
Treatment and prognosis
spontaneous resolution is the rule 4
occasionally, laparoscopic reduction is required in patients with a clearly transient/uncomplicated intussusception
cessation of any marijuana use ref
Intussusception in adults has a strong association with bowel pathology:
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9. Dollinger M, Bäumler W, Brunner S et al. Role of Clinical and CT Findings in the Identification of Adult Small-Bowel Intussusception Requiring Surgical Intervention. BJS Open. 2021;5(5). doi:10.1093/bjsopen/zrab076 - Pubmed
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10. Valentini V, Buquicchio G, Galluzzo M et al. Intussusception in Adults: The Role of MDCT in the Identification of the Site and Cause of Obstruction. Gastroenterol Res Pract. 2016;2016:5623718. doi:10.1155/2016/5623718 - Pubmed
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