When prostate cancer becomes more advanced, it can grow right up against—or into—the nerves that control erections and urinary function. In this excerpt, Jonathan Pavlinec, MD, explains why that matters. Using MRI imaging and surgical pathology, urologists can often see when cancer is pressing against the edge of the prostate or extending beyond it. When cancer involves the neurovascular bundle, nerve-sparing surgery may no longer be safe, because leaving those nerves behind can increase the ris