An 84-year-old woman with a history of hilar cholangiocarcinoma surgery presented with acute abdominal pain.Contrast-enhanced computed tomography (CT) demonstrated the pathognomonic features of small bowel volvulus (SBV): the whirlpool sign (Picture 1) and the barber pole sign (Picture 2).Laparotomy confirmed secondary SBV caused by
Yoshihara et al. (Thu,) studied this question.