I am 90 years old. About 20 years ago, I had prostate cancer and went through 43 weeks of radiation. My PSA level in the past year has risen slightly from .03 ng/mL to .09 ng/mL. My internist has ...

Dear Dr. Roach: I am 90 years old. About 20 years ago, I had prostate cancer and went through 43 weeks of radiation. My PSA ...

Positron emission tomography (PET) is a nuclear imaging technique used to diagnose conditions such as cancer. An innovative advance from scientists at St. Jude Children's Research Hospital is ...