The “Encino Man” actor, 57, revealed this week that he recently went under the knife to have a tumor removed from his pancreas — a shock diagnosis that came without any warning signs. “Instinct played a huge role in this,” Shore said of the trendy medical test he took on a whim, which detected the hidden growth. “You never know what the f—k is inside your body.” About three months ago, the funnyman decided to undergo a full-body scan — a high-tech, head-to-toe checkup that’s gaining traction among celebrities and wellness influencers. “They check for tumors, cancer, aneurysms, Parkinson’s, Alzheimer’s,...