A new definition of rectal cancer in the Netherlands prompted reclassification of cancer as sigmoid tumors, which could lead to better treatment. Rectal and sigmoidal tumors have been hard to ...

Dr. Esserman is a surgeon and breast cancer oncologist at the University of California, San Francisco. Dr. Eggener is a surgeon and urologic oncologist at the University of Chicago. “You have cancer.” ...

Tumors are notoriously difficult to study in their natural habitat - body tissues - but a new synthetic tissue environment may give cancer researchers the next-best look at tumor growth and behavior.