11.   The best way to treat the tumors has been the subject of intense debate among doctors.

12.   The device is currently used mainly in treating brain tumors.

13.   The team hopes that squalamine may ultimately be used with standard chemotherapy, radiation and surgery in treating brain tumors.

14.   The trick in treating brain tumors is to remove or destroy the tumor without damaging adjacent normal brain tissue.

15.   The treatment reached only the regions where it was injected, and was not expected to treat distant tumors in other parts of the body.

16.   To play it safe, doctors treat such tumors as if they were cancers.

17.   Today, QLT representatives presented studies they said showed the therapy was effective in treating lung tumors.

18.   Larger tumors must be treated by mastectomy, removal of the whole breast, followed by chemotherapy or radiation.

19.   The Lexington, Ky. -based company won U.S. approval to market its Photon Radiosurgery System to treat any tumor in the body.

20.   Yet treating those tumors can cause serious side effects.