The American College of Radiology states:
BIRADS Category 4B includes lesions with an intermediate suspicion of malignancy.
If you have questions as to what's going on, ask your surgeon, preferrably before the biopsy.
Radiation is a carcinogen, so it's best to minimize exposure. Having said that, there is also natural background daily radiation from the sun and radon, among other sources. One Head CT is not going to appreciably change your cancer risk; it is the same as you'd get naturally from background sources in 8 months. We scan because it can reveal valuabl...
I can't give a great answer without seeing any images, but I'll say some general things. I don't like the word "infiltrate" because as you say, it's unclear what that means. In this case, it sounds like there is some abnormal density in the soft tissues; generally that is a bruise. Even thought you don't remember trauma, the...
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