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rectosigmoid

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rectosigmoid /rec·to·sig·moid/ (rek″to-sig´moid) the terminal portion of the sigmoid colon and the proximal portion of the rectum.
rec·to·sig·moid (rkt-sgmoid)
n.
1. The rectum and the sigmoid colon considered as a unit.
2. The junction of the rectum and the sigmoid colon.

rectosigmoid
[rek′tōsig′moid]
Etymology: L, rectus + Gk, sigma, the letter S, eidos, form
pertaining to the part of the large intestine that includes the lower part of the sigmoid and the upper part of the rectum.

rectosigmoid [rek″to-sig´moid]
the lower portion of the sigmoid colon and the upper portion of the rectum.

rectosigmoid
the lower portion of the sigmoid colon and the upper portion of the rectum.


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It revealed a markedly dilated colon rectosigmoid to the anus, and a perforation in the proximal rectum and a twist in the proximal sigmoid consistent with an early volvulus.
FSIG is unfairly called 'the poor man's colonoscopy', because it examines only the rectosigmoid colon, or at best examines to the splenic flexure.
 
 
 
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