Full title: A 44-year-old man went to the hospital after pus began oozing from his chest, where doctors discovered a knife that had been embedded in his body for eight years. According to the report, he showed no signs of chest pain, breathing problems, coughing, or fever, and was otherwise in good health.
If you get scheduled for an MRI they will specifically ask if you have worked as a machinist. If you answer yes, they make you go to a location that can take x-rays before letting you in the MRI machine.
At least, that’s what happened when I had to schedule an MRI.