A confined gathering of extravasated blood, usually clotted, that presents as a mass in a tissue, organ, or space.
Localized swelling filled with blood due to a broken blood vessel.
The localized collection of blood in the tissues as a result of injury.
A swelling resulting from blood collecting in a restricted space, such as under the skull or skin; often found among victims of child abuse. A subdural hematoma is blood collected between the brain’s covering membrane and the spinal cord, as may be caused by accidental injury or by some types of child abuse, including violent shaking or a blow to the head. In some locations, especially in the head, the clot that forms can cause severe brain damage or be fatal. It can, however, sometimes be located by a CT or MRI scan and removed.
Localized collection of blood, usually clotted, in an organ, space, or tissue due to escape of blood from a blood vessel, often the result of trauma; when the hematoma occurs near the skin surface, it causes discoloration (e.g., a black eye).
A collection of blood in a body part as a result of ruptured or injured blood vessels. The medical importance of a hematoma depends on its location and size. A small hematoma under a fingernail resulting from an injury will heal on its own within a few weeks. A hematoma on the outer surface of the brain, called an epidural hematoma, may lead to death if not treated.
An accumulation of blood within the tissues that clots to form a solid swelling. Injury, disease of the blood vessels, or a clotting disorder of the blood is usually responsible. An intracranial hematoma causes symptoms by compressing the brain and by raising the pressure within the skull. Injury to the head may tear the middle meningeal artery, giving rise to a rapidly accumulating extradural hematoma requiring urgent surgical treatment. In elderly people a relatively slight head injury may tear the veins where they cross the space beneath the dura, giving rise to a subdural hematoma. Excellent results are obtained by surgical treatment. An intracerebral hematoma may be a consequence of severe head injury but is more often due to ‘atherosclerosis of the cerebral arteries and high blood pressure.
A swelling comprising a mass of extravasated blood (usually clotted) confined to an organ, tissue, or space and caused by a break in a blood vessel.
Hematoma, a confined accumulation of blood within an organ or tissue resulting from ruptured blood vessels.
A growth filled with blood, often caused by an injury that makes small veins bleed beneath the skin or within body tissues, leading to a lump. After the bleeding halts, the blood clots start to dissolve and get absorbed, often leaving behind some fibrous tissue that typically results in a minor, lasting scar tissue where the hematoma was. For initial care, applying a cold compress or ice pack can help reduce the bleeding in the first 24 hours.