Google is telling me that

[conuly]

Occasionally after an injury, blood collects and pools under the skin (hematoma), giving the skin a spongy, rubbery, lumpy feel. A regular bruise is more spread out and may not feel like a firm lump. A hematoma usually is not a cause for concern. It is not the same thing as a blood clot in a vein, and it does not cause blood clots.

Can anybody show me a picture of this? Google image search is *not* helpful.

Comments

[brownkitty.livejournal.com]

http://www.medterms.com/script/main/art.asp?articlekey=3682

This sounds an awful lot like a blood blister to me in appearance if not in cause.

[kibbles.livejournal.com]

Blood blisters are only tiny though, right? And under the skin? A hematoma can be anywhere, and can be huge.