South African Journal of Surgery
On-line version ISSN 2078-5151
Print version ISSN 0038-2361
A patient with the 'whirl sign' on computed tomography is 25.3 times as likely as a patient without the sign to have small-bowel obstruction (SBO) necessitating surgery. The 'whirl sign' therefore has an important role in the assessment of patients with clinical and radiological signs of SBO.