(NewsNation) — Following the announcement that former President Joe Biden has been diagnosed with aggressive prostate cancer, there has been widespread speculation about whether he was aware of his condition during his time in the White House, possibly even as he contemplated a second term. However, there are also calls for understanding and compassion towards the 82-year-old.

Dr. David Shusterman, a urologist, explained that Biden, who had access to top-tier medical care while serving as president, might have been aware of his condition for a while. He noted that the type of metastatic cancer Biden is facing typically takes years to develop.

“This is a scenario I usually encounter in a VA hospital, where a patient who hasn’t received medical care for a decade comes to the emergency room with bone pain and it is then discovered to be metastatic prostate cancer,” Shusterman shared on “NewsNation Prime” on Sunday.

In a statement released on Sunday afternoon, Biden’s office said the cancer was spreading to his bones but could potentially be treated through hormone therapy. The statement said the disease was characterized by a Gleason score of 9, underscoring the aggressiveness of his case.

“The fact that we just find it at a Gleason 9 is just pretty much unheard of in this day and age of medicine,” Shusterman said.

Leave politics out of it: GOP lawmaker, doctor

U.S. Rep. Greg Murphy, R-N.C., a urologist who treats prostate cancer patients, said it’s indeed possible Biden did not know about his cancer until recently.

Even if Biden’s physicians measured his Prostate-Specific Antigen (PSA) levels, Murphy said, the levels could have been deceptively low. A rectal examination may not have been performed as a separate gauge, he added, saying a patient needs both.

“To say that he’s being diagnosed with this and it’s being hidden, I think, is wrong. We don’t need to make that leap right now,” Murphy said. “I think America needs to step back and stop making everything political.”

Murphy said he has seen patients live 10 or 15 years with the type of diagnosis Biden disclosed, while others have died within months. “It really depends on how well he responds to therapy,” he said.

Second-guessing not appropriate: 2 former Biden staffers

Two former Obama administration officials, Joel Rubin and Jarrod Bernstein, decried the second-guessing about Biden’s announcement. They said people should be more concerned about Biden’s fight against cancer.

Rubin praised Trump for issuing a statement on social media wishing Biden well.

“Health issues are part and parcel of human life,” Rubin said. “We have to focus on him as a man and what he achieved for our country.”

Bernstein said, “Whatever you want to say about Joe Biden, about how he ended his presidency, whether he should have gotten out sooner, he is an honorable man and served this country for five decades.”