Hematoma

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Related to hematomas: edema, epidural hematoma

hematoma

[‚hē·mə′tō·mə]
(medicine)
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 It might be outdated or ideologically biased.

Hematoma

 

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 ?
Dippel, "Hematomas of the umbilical cord," Surgery, Gynecology & Obstetrics, vol.
The hematoma at the neck and base of tongue subsided after 2 days.
Yuksel, "The role of intravascular ultrasound guidance in the treatment of intramural hematoma probably caused by spontaneous coronary artery dissection in a young woman with acute anterior myocardial infarction," Cardiology Journal, vol.
Scalea, "Retropharyngeal and Bowel Hematomas in an Anticoagulated Patient," Academic Emergency Medicine, vol.
Rohde, "Functional outcome after surgical treatment of spontaneous and nonspontaneous spinal subdural hematomas," Journal of Neurosurgery: Spine, vol.
Comparison of the indications and treatment results of burr-hole drainage at the maximal thickness area versus twist-drill craniostomy at the pre-coronal point for the evacuation of symptomatic chronic subdural hematomas. J Korean Neurosurg Soc.
A moderate amount of hemoperitoneum and a subcapsular hematoma were observed on the abdominal ultrasound.
The dura was opened at level T5-6 and the hematoma was removed from the intradural region of the suspected area of bleeding.
A computed tomography (CT) scan showed parietal hematoma of D2, increased pancreatic volume without glandular necrosis, and a small amount of inflammatory stranding extending to left pre-renal fat.
The cranial magnetic resonance imaging (MRI) examination showed a subdural hematoma in the left fronto-parietal area, which was 6 cm thick in the largest part, was causing a 2-cm-thick midline shift, and also contained a large number of septations (Figure 1).
Identifying risk factors in development of clinically significant post-shock-wave lithotripsy subcapsular hematomas. Urology 1991;38:35-8.