A colostomy is an opening in the abdominal wall that is made during surgery.
The end of the colon is brought through the opening to form a "stoma"
Colostomy surgery is done for many different reasons and can be temporary or permanent.
The web site below will help explain.
http://www.cancer.org/docroot/CRI/content/CRI_2_6x_Colostomy.asp
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