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case_images: CT at initial diagnosis. CT revealed a whirl sign of the SMA and branches wrapped with the adjacent mesentery and small bowel loops, which are characteristic of SBV (allow).
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case_images: C-reactive protein level, 0.15 mmol/l). Computed tomography (CT) of the abdomen and pelvis was performed (Fig. 1), revealing a small amount of ascites in the Douglas fossa, a whirl sign of the superior mesenteric artery (SMA), and branches wrapped with the adjacent mesentery and small bowel loops, all characteristic of SBV.
case_images: Intraoperative photograph showing CA in the abdominal cavity.
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case_images: Initial laparoscopic examination revealed an edematous small intestine with mild congestion and milky ascites (Fig. 2).
case_images: Intraoperative photograph showing that the entire small bowel was twisted 360  counterclockwise.
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case_images: The entire small bowel was observed to be twisted 360  counterclockwise, and was therefore manually untwisted (Fig. 3).
case_images: Intraoperative photograph showing a small palm-sized diverticulum on the mesenteric side of the upper jejunum.
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case_images: However, because a small palm-sized diverticulum was observed on the mesenteric side of the upper jejunum, partial resection of the small bowel, including the diverticulum area, was performed, considering the influence of secondary SBV (Fig. 4).