A woman in Israel who was injured in a terror bombing in 2002 blogs her observations (via SondraK, via Steve):
Unless the shrapnel is causing damage, doctors will leave it where it is. Unfortunately there appear to be some differences between “causing damage” as defined by doctors and “causing damage” as defined by the average layman. For instance, many doctors do not define shrapnel which makes one’s face numb in parts and lumpy to the touch as “causing damage”. One doctor concluded his examination of my face with a cheerful “Zeh lo catastrof”, this isn’t a catastrophe. On the bright side, I am using this experience to force myself to pick up that essential, Israeli trait: the ability to argue with ANYBODY, including one’s doctor, even if the doctor is a neurosurgeon who might be called upon later to do very delicate surgery on one’s face. In the meantime, however, my shrapnel has been classed as “mostly harmless”, a good chunk of it is still in me and I should be setting off metal detectors for years to come. Theoretically, the average terrorist should have an easier time getting into the Central Bus Station than I will (more on that later).