An accumulation or swelling caused by blood collection in a body cavity or tissue; a blood-filled sac or swelling.
From hema- (blood) plus -cele (swelling or hernia, from Greek kēlē meaning tumor or hernia). The term describes a swelling specifically caused by blood accumulation.
A hematocele—like a blood-filled sac around the testicles—sounds alarming, but it's actually treatable and often reabsorbs on its own without surgery!
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