21.   In those days, there was no such thing as exploratory surgery.

22.   In those days, exploratory surgery meant cutting through muscle to reach the problem.

23.   It was time for more exploratory surgery.

24.   Last spring, doctors canceled a liver transplant after exploratory surgery showed the cancer had spread to the abdomen.

25.   Several hours passed and senior doctors in the obstetrics department did exploratory surgery.

26.   Spellman maintained he was, but would not undergo exploratory surgery.

27.   The cause was heart failure after exploratory surgery, said her executor, John Ross Adams.

28.   The exploratory surgery could have ended his chance for a life-saving liver transplant.

29.   Throughout the weeks of radiation, accompanied by low doses of chemotherapy, nobody mentioned the fateful exploratory surgery to come.

30.   When Gregory Merril thinks about the future, he imagines surgeons using detailed scans of their patients to perform virtual exploratory surgery without actually breaking the skin.