Biden's prostate cancer described as 'aggressive' — what to know about the disease's prognosis

Prostate cancer cases have been on the rise in recent years, increasing 3% annually since 2014 – and now former President Joe Biden is one of the more than 300,000 men to be diagnosed this year.

Biden's office released the announcement on Sunday, days after news that a "small nodule" had been found in the former president's prostate during a routine exam. 

"While this represents a more aggressive form of the disease, the cancer appears to be hormone-sensitive, which allows for effective management," his office said.