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CT Diagnosis of Volvulus of the Descending Colon with Persistent Mesocolon

Albert Chen1, Fei-Shih Yang1, Shin-Lin Shih1,2 and Chin-Yin Sheu1

1 Department of Radiology, Mackay Memorial Hospital, No. 92, Sec. 2, Chung-Shan N. Rd., Taipei 10449, Taiwan.
2 Department of Radiology, Taipei Medical University, No. 250, Wu-Hsing St., Taipei 110, Taiwan.



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  		Fig. 1A. —51-year-old woman with volvulus of descending colon. CT topogram shows markedly distended loop occupying left upper abdomen. Feces-filled ascending and transverse colons are mildly dilated and displaced.

 


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  		Fig. 1B. —51-year-old woman with volvulus of descending colon. Contrast-enhanced CT scan at level of splenic flexure (S) reveals one limb of distended loop with air–fluid level (arrows).

 


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  		Fig. 1C. —51-year-old woman with volvulus of descending colon. Contrast-enhanced CT scan obtained 2 cm caudad to B shows other limb of distended loop (arrows) tapering in size and coursing into round soft-tissue mass with whirled configuration (arrowheads).

 


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  		Fig. 1D. —51-year-old woman with volvulus of descending colon. Contrast-enhanced CT scan obtained 2 cm caudad to C shows whirl sign (arrowheads) in left colonic compartment.

 


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  		Fig. 1E. —51-year-old woman with volvulus of descending colon. Contrast-enhanced CT scan obtained 2 cm caudad to D shows afferent and efferent loops of whirled mass (arrowheads) are at level of descending colon. Note medial position of descending colon (arrows).

 


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  		Fig. 1F. —51-year-old woman with volvulus of descending colon. Contrast-enhanced CT scan obtained at level of iliac fossa reveals normally distributed mesentery and mildly dilated transverse colon and cecum. Note opacified small-bowel loops in iliac fossa.

 


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  		Fig. 1G. —51-year-old woman with volvulus of descending colon. Diagram of descending colon represents surgical findings.

 

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