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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 ?
11] Therefore, the significance of BP variation in outcomes of ICH patients should be based on hematoma location.
Delayed onset of posttraumatic acute subdural hematoma after mild head injury with normal computed tomography: a case report and brief review.
At the same time, the incidence of subdural hematoma nearly doubled (10.
Retroclival hematoma is an uncommon finding, typically occurring in the epidural space in pediatric patients following significant blunt trauma.
There was hematoma in retroperitoneal region originating from subhepatic area, reaching to right iliac fossa and Douglas pouch.
Multi-slice computerized tomography revealed signs of acute subdural hematoma in the region of Sylvian fissure, of about 13 mm in thickness, signs of SAH in the same region, and a 14-mm mid-sagittal structure shift (Fig.
Hematoma evacuation and decompression laminectomy were immediately performed.
A suspected hematoma should be confirmed by an otolaryngologist via indirect laryngoscopy or flexible nasal endoscopy.
Conclusion: The frequency of posterior fossa epidural hematoma was more in males.
Otoscopical evaluation of affected ear in dogs with aural hematoma showed pink, smooth and healthy ear canal with or without few hair follicles and minimum cerumen.
A CT scan of his abdomen showed a large (18 x 12 x 9 cm) retroperitoneal hematoma displacing the left kidney and extending to the pelvis (Figure 1).