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A cyst is a closed sac having a distinct membrane and division on the nearby tissue. It may contain air, fluids, or semi-solid material. A collection of pus is called an abscess, not a cyst. Once formed, the cyst could go away by itself or will have to be removed using surgery.
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Wikipedia About Cyst
A cyst is a closed sac having a distinct membrane and division on the nearby tissue. It may contain air, fluids, or semi-solid material. A collection of pus is called an abscess, not a cyst. Once formed, the cyst could go away by itself or will have to be removed using surgery.
Locations
- Arachnoid cyst (between the surface of the brain and the cranial base or on the arachnoid membrane)
- Baker's Cyst (behind the knee joint)
- Bartholin's cyst
- Breast cyst
- Chalazion cyst (eyelid)
- Crain's backs
- Cysticercal cyst (the larval stage of Taenia sp.)
- Dentigerous Cyst (associated with the crowns of non-erupted teeth)
- Dermoid cyst (ovaries, testes, many other locations from head to tailbone)
- 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)
- Hydatid cyst (larval stage of Echinococcus granulosus (tapeworm))
- 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)
- Liver cystic disease
- 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)
- Polycystic ovary syndrome
- Radicular cyst (associated with the roots of non-vital teeth)
- Sebaceous cyst (sac below skin)
- Tarlov cyst (spine)
- Vocal fold cyst
Cystic fibrosis
Despite being described in 1938 as involving the microscopic appearance of cysts in the pancreas cystic fibrosis is an example of a genetic disorder whose name is related to fibrosis of the cystic duct and does not involve actual cysts.
Benign vs malignant
Many cysts in the body are benign (functional), the result of plugged ducts or other natural body outlets for secretions. However, a few are tumors or are produced within tumors, and are potentially malignant:
- Dermoid cyst
- Keratocyst
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
- "Cyst Symptoms and Causes" by Melissa Conrad Stöppler, MD and William C. Shiel, Jr., MD, FACP, FACR.
