Figure 4. A 44-year-old woman presented with small bowel obstruction (SBO) and fever. (a) Contrast-enhanced CT at the right lower abdomen shows a cluster of unopacified dilated small bowel loops (white arrows), medially to the cecum with the terminal ileum (black arrow). Opacified, dilated small bowel loops proximal to the hernia sac are also seen. (b) Lower down, the nature of the saclike mass with the unopacified, dilated small-bowel loops with converging and blurred mesenteric vessels (black arrow), interposed between the laterally displaced cecum and the abdominal wall, is clearly demonstrated. At surgery a paracecal hernia containing a viable closed loop was found and repaired.