Signs and Symptoms
- Hematomas can be visible under the skin or felt as masses or lumps
- Lumps may be caused by blood being limited to a specific space
- Hematomas may dissolve or continue to grow
- Broken down blood cells and hemoglobin can move in the connective tissue
- Hematomas on articulations can reduce mobility and resemble fractures
Classification
- Hematomas can be classified based on their location and cause
- Types of hematomas include subdermal, intramuscular, and skull/brain hematomas
- Subgaleal hematoma occurs between the galea aponeurosis and periosteum
- Cephalohematoma is commonly caused by vacuum or vertex delivery
- Hemangioma is a misdiagnosis of a hematoma in the vertebra
Types
- Subdermal hematoma occurs under the skin
- Intramuscular hematoma develops inside muscle tissue
- Skull/brain hematomas include subgaleal and cephalohematoma
- Hematoma can also refer to a mass or tumor
- Hematomas can occur in various parts of the body, such as the ankle or buttocks
See also
- Metanephric dysplastic hematoma of the sacral region
- Welts can sometimes resemble hematomas
- Further information on hematoma types, causes, and treatments
- Hematoma information from the University of Utah library
- Robbins Basic Pathology textbook reference
References
- Hematoma classification according to ICD-10 and ICD-9-CM codes
- Definition of hematoma from the Online Etymology Dictionary
- Reference to a book on pathology discussing hematoma
- Additional reference from Emedicinehealth.com on hematoma information
- Gross image of a hematoma on a toenail from the University of Utah library
This article needs additional citations for verification. (April 2012) |
A hematoma, also spelled haematoma, or blood suffusion is a localized bleeding outside of blood vessels, due to either disease or trauma including injury or surgery and may involve blood continuing to seep from broken capillaries. A hematoma is benign and is initially in liquid form spread among the tissues including in sacs between tissues where it may coagulate and solidify before blood is reabsorbed into blood vessels. An ecchymosis is a hematoma of the skin larger than 10 mm.
Hematoma | |
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Other names | haematoma |
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Contusion (bruise), a simple form of hematoma | |
Specialty | Emergency medicine |
They may occur among and or within many areas such as skin and other organs, connective tissues, bone, joints and muscle.
A collection of blood (or even a hemorrhage) may be aggravated by anticoagulant medication (blood thinner). Blood seepage and collection of blood may occur if heparin is given via an intramuscular route; to avoid this, heparin must be given intravenously or subcutaneously.
From hemato- + -oma. Among the many words derived from -oma that are in current common use, this word is one of only a few that do not denote a neoplasm; another is granuloma.