Citation, DOI, disclosures and article data
Citation:
Neto A, Molinari A, Glick Y, Split-wall sign (sigmoid volvulus). Reference article, Radiopaedia.org (Accessed on 21 May 2024) https://doi.org/10.53347/rID-91576
The split-wall sign is one of the signs of sigmoid volvulus. This sign is characterized by the separation of the walls of a single loop of the sigmoid colon due to the invagination of mesenteric fat between them. The intervening fat causes the loop to appear bilobed or C-shaped on axial images, thereby giving it the appearance of two bowel loops.
The split-wall sign signifies either
- a partial twist
- an early stage in twisting, still incomplete
- untwisting of a previous complete twist
History and etymology
Jeffrey M Levsky et al. were the first to describe the sign and coin the term in 2010 1.
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1. Jeffrey M. Levsky, Elana I. Den, Ronelle A. DuBrow, Ellen L. Wolf, Alla M. Rozenblit. CT Findings of Sigmoid Volvulus. (2012) American Journal of Roentgenology. doi:10.2214/AJR.09.2580
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2. Juliana M. Rosenblat, Alla M. Rozenblit, Ellen L. Wolf, Ronelle A. DuBrow, Elana I. Den, Jeffrey M. Levsky. Findings of Cecal Volvulus at CT. (2010) Radiology. doi:10.1148/radiol.10092112
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3. Singh Y, Islam S, Arra A, Banfield R, Naraynsingh V. The steel pan sign of sigmoid volvulus-A case series. (2017) International journal of surgery case reports. 41: 332-335. doi:10.1016/j.ijscr.2017.10.064 - Pubmed
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