Split-wall sign (sigmoid volvulus)
Citation, DOI, disclosures and article data
At the time the article was created Antonio Rodrigues de Aguiar Neto had no recorded disclosures.View Antonio Rodrigues de Aguiar Neto's current disclosures
At the time the article was last revised Andrea Molinari had no recorded disclosures.View Andrea Molinari's current disclosures
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.
- 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
- 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
- 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