(redirected from haematoma)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


A localized mass of blood in tissue; usually it clots and becomes encapsulated by connective tissue.



a localized accumulation of liquid blood in tissues.

A hematoma is formed during hemorrhages if the blood does not infiltrate the tissues (such as the subcutaneous tissue, muscles, periosteum, brain, liver, and spleen) but rather separates them, forming a cavity. The primary cause of hematomas is trauma, or rupture of pathologically altered blood vessels. Small hematomas are resorbed without a trace, but an inflammatory reaction develops, with the formation of a thick capsule, around large ones. Hematomas result in swelling, ecchymosis, pain, and dysfunction of the affected organ. Treatment involves application of a pressure bandage, and treatment with cold the first day and then heat. Surgery is indicated if a liver or spleen hematoma ruptures or if the hematoma suppurates.

References in periodicals archive ?
The management of subcapsular haematoma may be operative, radiological (transcatheter embolization), or conservative.
Wong CW Criteria for conservative treatment of supratentorial acute subdural haematomas.
But the new research shows that the haemorrhages, known as subdural haematomas, resolve themselves quickly and soon become undetectable.
Haematomas can heal by themselves, but the blood is a good breeding area for bacteria and the ear will be deformed by scar tissue as it heals.
An abdominal ultrasound scan demonstrated a rectus sheath haematoma measuring 1 x 2.
Contralateral acute epidural haematoma following evacuation of a chronic subdural haematoma with burr-hole craniostomy and continuous closed system drainage: A rare complication.
An auricular haematoma is collection of blood or serum within the cartilage plate of pinna which is presented as fluctuant, fluid filled swelling on concave surface of one or both pinna (Fossum, 2007).
Table 1: Computed tomography grading of rectus sheath haematoma (5) Type Description I The haematoma is intramuscular, unilateral and does not dissect along the fascial planes II The haematoma can be unilateral or bilateral, with blood between the muscle and the transversalis fascia III Blood is seen to track along the fascial lines, into the peritoneum and the prevesical space
Objective: The aim of this study is to evaluate the level of safety and effectiveness of a subgaleal vacuum drain in chronic subdural haematoma.
Massive sublingual haematoma following osseo-integrated implant placement in the anterior mandible.
Blood pressure is not associated with haematoma enlargement in acute intracerebral haemorrhage.