MY father had just returned from risky and complicated surgery to save the sight in his one functioning eye.

Junior doctors have taken their places, but some of the more complicated surgeries are no longer done.

But it can take from half an hour to 40 minutes, lengthening already delicate and complicated surgery.

What Williams is doing is buying time, even though it could mean more complicated surgery down the line.

In May 2004 he had to undergo a complicated surgery for cancer on the neck and died shortly after.

The complicated surgery was needed to cover the crater-like wound under his eyes.

This procedure is usually best for women with chronic health conditions, because a more extensive or complicated surgery could be dangerous.

For more complicated surgeries, you may have to move to a hospital room to continue your recovery.

Transplants, whether performed on animals or humans, are "some of the most complicated surgery there is," she said.

These procedures may be reversed but only by complicated surgery, which is not always successful.