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A localized mass of blood in tissue; usually it clots and becomes encapsulated by connective tissue.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Role of surgery in the management of patients with supratentorial spontaneous intracerebral hematoma: Critical appraisal of evidence.
Caption: FIGURE 2: Assessment of midline shift (MLS) on an image of intracerebral hematoma (ICH) compressing the brain.
Distribution of radiologic CT findings in patients with head trauma, acute stroke and intracranial tumors Trauma--CT finding (N=1469) n % Skull fracture 339 23.07 Traumatic SAH 321 21.85 Traumatic intracerebral hematoma 70 4.76 Cerebral contusion/laceration 222 15.11 Epidural hematoma 68 4.63 Acute subdural hematoma 356 24.23 Chronic/mixed subdural hematoma 93 6.33 Acute stroke--CT finding (N=597) n % Acute ischemia 286 47.90 Subacute ischemia 66 11.06 Non-traumatic SAH 101 16.92 Intracerebral hematoma 144 24.12 Tumor - CT finding (N=212) n % Primary brain tumor 23 10.84 Meningioma 56 26.41 Metastasis 45 21.22 Unclassifed tumor 88 41.50 CT = computed tomography; SAH = subarachnoid hemorrhage
The new transinsular approach to the hypertensive intracerebral hematoma. Jpn J Surg 1972;2:47-52.
Erzen, "Leukoaraiosis and intracerebral hematoma," Stroke, vol.
Guio-Carrion et al., "Intracerebral hematoma complicating herpes simplex encephalitis," Clinical Neurology and Neurosurgery, vol.
Arterial hypertension has been associated with the occurrence of HT in the form of intracerebral hematoma (17, 23, 24).
However, severe neurological manifestations such as seizures, intracerebral hematoma, hemiplegia, coma, blindness and encephalopathy are rare but potentially serious complications (1-13).
This criterion may have favored the inclusion of patients with rather large intracerebral hematomas. In fact, according to the analysis stratified for NIHSS values, the diagnostic performance of the GFAP test is better in patients having a more severe stroke syndrome.
Questions of surgical treatment of hypertensive intracerebral hematomas (ICH) are the most difficult.
Intracranial complications can include intracerebral hematoma, cerebral contusion, intraventricular hemorrhage, pneumocephalus, brain stem injury, and carotid cavernous sinus fistula.
reported, but did not illustrate, the autopsy findings in the brain of one 24-year-old American private who developed a massive intracerebral hematoma in the internal capsule, caudate nucleus, and thalamus 3 months after being rendered unconscious by a mortar shell explosion but receiving no external injury of the head or elsewhere [6].