Nigeria, May 19 -- Former US President Joe Biden has been diagnosed with prostate cancer that has spread to his bones.

The diagnosis came on Friday after he visited a doctor due to urinary symptoms.

His office confirmed the development in a statement released on Sunday.

Biden, 82, had been experiencing discomfort before deciding to see a doctor last week.

Medical checks revealed a prostate nodule, and further tests confirmed the cancer.

The illness is described as a more aggressive type, based on a Gleason score of 9 out of 10.

This score, used to grade the severity of prostate cancer, suggests that the disease could spread quickly.

The cancer has already reached his bones, which usually makes treatment more complex.

Despite the s...