In 2021, J. David Garrett, Ph.D., began to experience pain in his upper abdomen and back. He initially blamed it on acid reflux. When the pain started to affect his daily activities, his wife, Ruth, encouraged him to see his doctor.

David’s doctor conducted several tests, but the results showed nothing serious. His doctor suggested a CT scan and MRI.

Later that day, David’s doctor called to tell him there was a large mass...