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A 35-year-old female asked:

I fell a few years ago down the stairs and had a hematoma on my lower back and butt and i noticed that i have a knot could that be the cause of it? the knot doesnt hurt just worried. because i have neurofibromatosis and i know knots can come up too?

1 doctor answer1 doctor weighed in
Dr. James Ferguson
Pediatrics 47 years experience
When a large bruise/hematoma forms there can be a knot of calcium deposited at the site. This can take upwards of a year to fade. I doubt it has anything to do with the NF.
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Last updated Mar 20, 2021

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