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Encyclopedia > Cyst

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 could go away by itself or will have to be removed using surgery. The ICAO (IPA pronunciation: ) airport code or location indicator is a four-letter alphanumeric code designating each airport around the world. ... St. ... A biological membrane or biomembrane is an enclosing or separating tissue which acts as a barrier within or around a cell. ... Look up division in Wiktionary, the free dictionary. ... Biological tissue is a collection of interconnected cells that perform a similar function within an organism. ... Look up air in Wiktionary, the free dictionary. ... For other uses, see Pus (disambiguation). ... For the death metal band, see Abscess (band). ...



Arachnoid cysts are cerebrospinal fluid covered by arachnoidal cells and collagen[1] that may develop between the surface of the brain and the cranial base or on the arachnoid membrane, one of the three membranes that cover the brain and the spinal cord. ... A breast cyst appears as a lump on the breast, which may appear to be similar to breast cancer but is generally benign. ... A Bakers cyst, otherwise known as a popliteal cyst, is a benign swelling found behind the knee joint. ... A chalazion, also known as a Meibomian gland lipogranuloma, is a cyst in the eyelid that is caused by inflammation of the meibomian gland, usually on the upper eyelid. ... Cysticercosis, or neurocysticercosis, is the most common parasitic infestation of the central nervous system worldwide. ... A dentigerous cyst is an odontogenic cyst - thought to be of developmental origin - associated with the crown of an unerupted (or partially erupted) tooth. ... A dermoid cyst is a teratoma that contains developmentally mature skin, with hair follicles and sweat glands, sometimes luxuriant clumps of long hair, and often pockets of sebum, blood, or fat. ... This article does not cite any references or sources. ... A ganglion cyst (also known as a bible bump) is a swelling that often appears on or around joints and tendons in the hand (or sometimes feet). ... Gartners duct is a potential embryological remnant in human female development of the mesonephric ducts. ... Orders Subclass Cestodaria Amphilinidea Gyrocotylidea Subclass Eucestoda Aporidea Caryophyllidea Cyclophyllidea Diphyllidea Lecanicephalidea Litobothridea Nippotaeniidea Proteocephalidea Pseudophyllidea Spathebothriidea Tetraphyllidea Trypanorhyncha In biology, Cestoda is the class of parasitic flatworms, called cestodes or tapeworms, that live in the digestive tract of vertebrates as adults and often in the bodies of various animals... An odontogenic keratocyst is a benign but locally aggressive developmental odontogenic cyst. ... The Nevoid Basal Cell Carcinoma Syndrome (NBCCS) (also known as Basal Cell Nevus Syndrome, Multiple Basal Cell Carcinoma Syndrome, Gorlin syndrome, or Gorlin-Goltz syndrome) is an inherited group of multiple defects involving the skin, nervous system, eyes, endocrine system, and bones. ... WHO redirects here. ... A chalazion, also known as a Meibomian gland lipogranuloma, is a cyst in the eyelid that is caused by inflammation of the meibomian gland, usually on the upper eyelid. ... This article or section does not adequately cite its references or sources. ... Benign ovarian cyst. ... Polycystic kidney disease (PKD) is a progressive, genetic disorder of the kidneys. ... Polycystic Ovary Syndrome (abbreviated PCOS or POS), also known clinically as Stein-Leventhal syndrome, is an endocrine disorder that affects approximately 10% of all women . ... Close-up of an infected sebaceous cyst that has abscessed, located behind the ear lobe. ... Vocal fold cysts are collections of fluid in sac-like formations on the vocal folds. ...

Cystic fibrosis

Despite being described in 1938 as involving the microscopic appearance of cysts in the pancreas[1] 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.[2] A microscope (Greek: micron = small and scopos = aim) is an instrument for viewing objects that are too small to be seen by the naked or unaided eye. ... A genetic disorder is a condition caused by abnormalities in genes or chromosomes. ... The cystic duct is the short (usually around a centimetre or so) duct that joins the gall bladder to the common bile duct. ...

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: Look up Benign in Wiktionary, the free dictionary. ... Look up functional in Wiktionary, the free dictionary. ... Tumor (American English) or tumour (British English) originally means swelling, and is sometimes still used with that meaning. ... Cancer is a class of diseases or disorders characterized by uncontrolled division of cells and the ability of these to spread, either by direct growth into adjacent tissue through invasion, or by implantation into distant sites by metastasis (where cancer cells are transported through the bloodstream or lymphatic system). ...

A dermoid cyst is a teratoma that contains developmentally mature skin, with hair follicles and sweat glands, sometimes luxuriant clumps of long hair, and often pockets of sebum, blood, or fat. ... An odontogenic keratocyst is a benign but locally aggressive developmental odontogenic cyst. ...

Related structures

A pseudocyst is collection without a distinct membrane. A pseudocyst is a pathological collection of fluid. ...

A syrinx in the spinal cord or brainstem is sometimes inaccurately referred to as a cyst. In medicine, a syrinx is a rare, fluid-filled neuroglial cavity within the spinal cord (syringomyelia) or in the brain stem (syringobulbia) Dorlands/Elsevier s_33/12787038 Merck Manual 14-182d Category: ...


  1. ^ Anderson, D.H. (1938). "Cystic fibrosis of the pancreas and its relation to celiac disease". Am J Dis Child 56: 344-399. 
  2. ^ Greenholz SK, Krishnadasan B, Marr C, Cannon R (1997). "Biliary obstruction in infants with cystic fibrosis requiring Kasai portoenterostomy". J. Pediatr. Surg. 32 (2): 175–9; discussion 179–80. doi:10.1016/S0022-3468(97)90174-3. PMID 9044117. 

A digital object identifier (or DOI) is a standard for persistently identifying a piece of intellectual property on a digital network and associating it with related data, the metadata, in a structured extensible way. ...

External links

  • DER78 at FPnotebook
  • "Cyst Symptoms and Causes" by Melissa Conrad Stöppler, MD and William C. Shiel, Jr., MD, FACP, FACR.
Thyroid cancer is cancer of the thyroid gland. ... Thyroid cancer is cancer of the thyroid gland. ... Adrenocortical carcinoma is a carcinoma of the cortex (outer layer) of the adrenal gland. ... A phaeochromocytoma (pheochromocytoma in the US) is a neuroendocrine tumor of the medulla of the adrenal glands originating in the chromaffin cells, which secretes excessive amounts of catecholamines, usually adrenaline and noradrenaline (epinephrine and norepinephrine in the US). ... Pituitary adenomas are tumors that occur in the pituitary gland, and account for about 10% of intracranial neoplasms. ... A tumor suppressor gene is a gene that reduces the probability that a cell in a multicellular organism will turn into a tumor cell. ... An oncogene is a modified gene that increases the malignancy of a tumor cell. ... The stage of a cancer is a descriptor (usually numbers I to IV) of how much the cancer has spread. ... In pathology, Grading is a measure of the progress of tumors. ... Cancers are caused by a series of mutations. ... Look up carcinogen in Wiktionary, the free dictionary. ... Cancer research is research into cancer in order to identify causes and develop strategies for prevention, diagnosis, treatments and cure. ... A paraneoplastic phenomenon is a disease or symptom that is the consequence of the presence of cancer in the body, but is not due to the local presence of cancer cells. ... This is a list of terms related to oncology. ...

  Results from FactBites:
Ovarian Cyst -- familydoctor.org (906 words)
An ovarian cyst is a fluid-filled sac in or on the ovary.
Many ovarian cysts are noncancerous cysts that occur as a result of ovulation (the release of an egg from the ovary).
If the cyst is small (about the size of a plum or smaller) and if it looks benign on the sonogram, your doctor may decide to do a laparoscopy.
What is a Cyst? (1085 words)
A cyst is generally formed on the surface of an organ or in the empty spaces between muscle and skin tissues.
The condition known as cystic fibrosis is aggravated by numerous cysts forming and subsequently bursting in the lung cavity.
I have had a couple cysts that were a little smaller than a pea and I was able to reduce them to nothing over the course of a month or so by rubbing them to break up the material inside.
  More results at FactBites »



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