1.   Cancer tumors seem to give off more heat than healthy cells.

2.   Scientists are mystified as to why, but brain tumors seem to be increasing.

3.   The new tumor seems to be confined to the single node, with no spread elsewhere, Ms. Murphy said.

4.   Last October, those investigators confirmed their earlier findings that the malignant tumors seemed more than a random cancer cluster.

5.   Shrinking tumors seemed a lot to ask.