A hematoma US spelling or haematoma UK spelling is a localized bleeding outside of blood vessels, due to either disease or trauma including injury or surgery  and may involve blood continuing to seep from broken capillaries. A hematoma is benign and is initially in liquid form spread among the tissues including in sacs between tissues where it may coagulate and solidify before blood is reabsorbed into blood vessels. An ecchymosis is a hematoma of the skin larger than 10mm. A collection of blood or even a hemorrhage may be aggravated by anticoagulant medication blood thinner.
Breast Seromas: Symptoms, Causes, Treatment, Prevention
A hematoma is a collection of blood that has escaped a damaged blood vessel or vein. Unlike other bruises, it is usually accompanied by significant swelling. You should get any hematomas suffered on your head or near your internal organs checked by a doctor right away. Hematomas found just under the skin subdermal on your arms and legs can be treated at home after evaluation from a healthcare provider to ensure no other complications have arisen.
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It's not unlike having a large bruise in your breast. The mass it forms is not cancerous, but it can sometimes lead to inflammation, fever, skin discoloration, and may leave behind scar tissue that mimics the shape of a breast tumor. A breast hematoma can happen to anyone regardless of age or menopausal status. It may be caused by trauma, or procedures like a breast biopsy or breast surgery.