For a sigmoid colectomy, the splenic flexure should be mobilized so that the transverse colon can be potentially brought down for the anastomosis.
The tunnel runs in the loose connective tissues: Behind the sigmoid colon.
It was a defunctioning sigmoid loop colostomy created above a locally advanced rectal carcinoma.
A loop colostomy in the sigmoid area would usually produce a formed stool allowing the patient to use a closed pouch.
An end sigmoid colostomy may be described by some, as easier to manage, particularly for elderly patients.