Medical term:

pseudocyst



pseudocyst

 [soo´do-sist]
1. an abnormal or dilated cavity resembling a true cyst but not lined with epithelium; called also adventitious or false cyst.
2. a cystic collection of fluid and necrotic debris whose walls are formed by the pancreas and other surrounding organs. It occurs as a complication of acute pancreatitis and may subside spontaneously or become secondarily infected and develop into an abscess.
3. a cluster of small comma-shaped forms of Toxoplasma gondii, sometimes containing thousands of organisms within an irregular wall; it represents a resting stage, as opposed to the active, motile stage. Pseudocysts are found in the tissues, especially muscles and the brain, in chronic (latent) toxoplasmosis.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pseu·do·cyst

(sū'dō-sist),
1. An accumulation of fluid in a cystlike loculus, but without an epithelial or other membranous lining.
See also: bradyzoite. Synonym(s): adventitious cyst, false cyst
2. A cyst the wall of which is formed by a host cell and not by a parasite.
See also: bradyzoite.
3. A mass of 50 or more Toxoplasma bradyzoites, found within a host cell, frequently in the brain; formerly called a pseudocyst, but now considered a true cyst enclosed in its own membrane within the host cell that may rupture to release particles that form new cysts, and apparently is infective to another vertebrate host.
See also: bradyzoite.
[pseudo- + G. kystis, bladder]
Farlex Partner Medical Dictionary © Farlex 2012

pseudocyst

Parasitology A cyst-like 'mass' that corresponds to a macrophage laden with Toxoplasma gondii or other sporozoans which is most often seen in the brain, a finding typical of AIDS neuropathy Pathology A dilated space lined by neither epithelium nor mesothelium, classically seen in the pancreas as unilocular spaces lined by fibrous tissue, often following multiple bouts of acute pancreatitis, or in the ultrarare hereditary pancreatitis.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

pseu·do·cyst

(sū'dō-sist)
1. An accumulation of fluid in a cystlike loculus, but without an epithelial or other membranous lining.
Synonym(s): adventitious cyst.
2. A cyst with a wall formed by a host cell and not by a parasite.
3. A mass of 50 or more Toxoplasma bradyzoites, found within a host cell, frequently in the brain; a true cyst enclosed in its own membrane within the host cell that may rupture to release particles that form new cysts.
[pseudo- + G. kystis, bladder]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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