(he’ma-to’mah)-a collection of blood outside the blood vessels but still confined within the tissues or organs of the body. This blood is usually completely or partly clotted. They can arise as a complication after any surgery especially if the patient is on blood thinners or after a traumatic injury. All large hematomas should be surgically drained especially those under skin elevated in a facelift, breast reduction or abdominoplasty. Ignoring expanding hematomas in these settings can lead to death of the overlying skin & a poor cosmetic result. Small hematomas may be resorbed by the body or aspirated with syringe & needle after the hematoma liquifies (usually 7 to 10 days).