1.   Complete remission was defined as resolution of clinical evidence of disease and of endoscopic lesions, with negative biopsy specimens and absence of extragastric localisation.

2.   Even negative biopsies may increase risk, researchers say, because the need for them may reflect an underlying problem linked to the tendency to develop cancer.

3.   On the other hand, the radiologist with the lowest rate of cancer detection had a very low rate of negative biopsies.

4.   Gann said that looking for the percentage of free PSA should help doctors avoid negative biopsies in men whose PSA levels are in this gray area.