Former President Joe Biden has entered a new phase of his cancer treatment, according to his office. His team revealed on Saturday, that he is undergoing a five-week course of radiation therapy for aggressive, metastatic prostate cancer, NBC News reports.

The new treatment is in addition to hormone medication he is already taking. A spokesperson noted that the 82-year-old is “doing well” with the new regimen, according to the New York Post .

In May, Biden’s post-presidential office announced his diagnosis of aggressive prostate cancer that had already spread to his bones.

The former president has also had multiple procedures for skin cancer. In September, a spokesperson confirmed to PEOPLE that he underwent Mohs surgery on his forehead to remove cancerous cells. He previously had

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