Breast Cancer, Mammography, Radiology

Study Adds to Debate about Mammography in Older Women

Studies have shown that routine screening mammography does reduce breast cancer deaths in women aged 40 to 75. But screening also comes with downsides, which include the risk of overdiagnosis and overtreatment. A new study suggests that the risk of overdiagnosis with routine screening mammography is substantial for women in their 70s and older.

Cancer, Drugs, Vaccines

Immune cells that fight cancer become exhausted within hours of first encountering tumors – new research

A type of T cell called cytotoxic T cells can recognize the mutated proteins on cancer cells and should therefore be able to kill them. However, in most patients, cancer cells grow unchecked despite the presence of T cells.

The current explanation scientists have as to why T cells fail to eliminate cancer cells is because they become “exhausted.” The idea is that T cells initially function well when they first face off against cancer cells, but gradually lose their ability to kill the cancer cells after repeated encounters.