It also means that the test fails at detecting cancer more often than not, and will mean that if it detects a true cancer this time doctors will be inclined to not take it seriously because evidence/experience is that the test is useless
I suppose this takes into account the fact that doctors are humans too, and humans are typically not good at statistics. The probability of cancer from a positive test rises from 0.8% to 14.1%, a significant increase, and seems to warrant a closer look, from a layman's point of view at least.
