<p><strong>What Is Bursitis? </strong></p>
<p>Bursitis is inflammation of a bursa—one of the small, fluid-filled sacs located near joints and bony prominences throughout the body. The bursae (plural form) act as cushions between muscles and tendons and between muscles and bones. They produce a lubricating fluid to minimize friction at these sites, thus facilitating joint movement. Irritation, overuse, infection, or injury can inflame a bursa, resulting in painful bursitis.</p>
<p>Shoulders, elbows, hips, knees, heels, and the base of the big toe are among the sites most often affected. Bursitis is so common that it has acquired a number of familiar names, including “student’s elbow” and “housemaid’s knee.”</p>
<p>Bursitis can come on suddenly and resolve quickly, or it can become chronic and increasingly debilitating. The condition can be classified according ...
Lymph node culture is a laboratory test performed on a lymph node to identify microorganisms (bacteria, viruses, and fungi) that cause infection and lymph node swelling.
Culture - lymph node
How the test is performed
A sample of fluid from a lymph node is needed. This may be done using a needle to draw out fluid (aspiration) or during a lymph node biopsy .
The sample is sent to a laboratory where it is placed in a special dish and watched to see if bacteria, fungi, or viruses grow. This is called a culture. Sometimes special stains are also used to identify specific cells or microorganisms.
If needle aspiration does not provide a good enough sample, the entire lymph node may be removed and sent for culture and other testing.
How to prepare for the test
There is no special preparation needed for the lab test. For information on how to prepare for the lymph node sample, see lymph node biopsy .
How the test...
Biopsy - lymph nodes; Open lymph node biopsy; Fine needle aspiration biopsy; Sentinel lymph node biopsy
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Clinical practice guideline for melanoma: NCCN Medical Practice Guidelines and Oncology; V.2.2010. Available online.
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