Cyst
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Overview
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Evidence Based Medicine | |
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Ongoing Trials on Cyst at Clinical Trials.gov Clinical Trials on Cyst at Google
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US National Guidelines Clearinghouse on Cyst
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Definitions | |
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Patient Resources / Community | |
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Directions to Hospitals Treating Cyst Risk calculators and risk factors for Cyst
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A cyst ( is a closed sac having a distinct membrane and division on the nearby tissue. They may contain air, fluids, or semi-solid material. A collection of pus is called an abscess, not a cyst. Once formed, the cyst will remain in the tissue permanently and can be removed by surgery or by taking medication that will dissolve it. A cyst may also be a sack that encloses an organism during a dormant period, such as in the case of certain parasites. This type of cyst may, for instance, protect a parasite from the churning acid of the stomach so it may pass through to the intestines unharmed where it can then break out. Cystic fibrosis is an example of a genetic disorder whereby cysts and fibrosis develop in the lungs.
Locations
- Arachnoid cyst (between the surface of the brain and the cranial base or on the arachnoid membrane)
- Chalazion cyst (eyelid)
- Cysticercal cyst (the larval stage of Taenia sp.)
- Dentigerous Cyst (associated with the crowns of non-erupted teeth)
- Epididymal Cyst (found in the vessels attached to the testes)
- Ganglion cyst (hand/foot joints and tendons)
- Glial Cyst (in the brain)
- Gartner's duct cyst (vaginal or vulvar cyst of embryological origin)
- Keratocyst (in the jaws, these can appear solitary or associated with the Gorlin-Goltz or Nevoid basal cell carcinoma syndrome. The latest World Health Organization classification considers Keratocysts as tumors rather than cysts)
- Meibomian cyst (eyelid)
- Nabothian cyst (cervix)
- Ovarian cyst (ovaries, functional and pathological)
- Paratubal cyst (fallopian tube)
- Pilonidal cyst (skin infection near tailbone)
- Renal cyst (kidneys)
- Radicular cyst (associated with the roots of non-vital teeth)
- Sebaceous cyst (sac below skin)
- Tarlov cyst (spine)
- Vocal fold cyst
- Dermoid cyst (Skull and ovaries)
- Breast cyst
Related structures
A pseudocyst is collection without a distinct membrane.
A syrinx in the spinal cord or brainstem is sometimes inaccurately referred to as a cyst.
External links
- DER78 at FPnotebook
- "Cyst Symptoms and Causes" by Melissa Conrad Stöppler, MD and William C. Shiel, Jr., MD, FACP, FACR.
cs:Cysta (lékařství)
de:Zystefr:Kyste
io:Kisto
it:Cisti (medicina)
he:ציסטה
hu:Ciszta
nl:Cyste
ja:嚢胞
no:Cystefi:Kysta
sv:Cysta
Acknowledgement and Attribution Regarding Sources of Content
Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .

