Doctors Hunt For Hidden Cancers With Glowing Dyes

PHILADELPHIA (AP) — It was an ordinary surgery to remove a tumor — until doctors turned off the lights and the patient’s chest started to glow. A spot over his heart shined purplish pink. Another shimmered in a lung.
They were hidden cancers revealed by fluorescent dye, an advance that soon may transform how hundreds of thousands of operations are done each year.
Surgery has long been the best way to cure cancer. If the disease recurs, it’s usually because stray tumor cel