Origin of the name Sydney: Transferred use of the surname originating as a Norman baronial name taken from the place-name St. Denis in Normandy. Alternatively, the name arose independently in England and is derived from the Old English elements sÄ«d (extensive, wide) and ieg (island in a river, riverside meadow).
Sigmoidectomy surgery for inflammatory bowel disease (IBD) Sigmoidectomy surgery removes all or part of the sigmoid colon - the S-shaped part of the large intestine just before the rectum. Where possible the two healthy ends of the intestinal tract are then rejoined. If this is not possible then a stoma may be formed.
Mastoidectomy is performed to remove infected air cells within the mastoid bone caused by mastoiditis, ear infection, or an inflammatory disease of the middle ear (cholesteatoma).The cells are open spaces containing air that are located throughout the mastoid bone.astoidectomy is a surgical procedure to remove an infected portion of the bone behind the ear when medical treatment is not effective. This surgery is rarely needed today because of the widespread use of antibiotics.