| PC | avoirdupois weight [Lat. pondus civile]; packed cells; paper chromatography; paracortex; parent cell... |
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| pseudocyst | 1. An accumulation of fluid in a cystlike loculus, but without an epithelial or other membranous lining. Synonym: adventitious cyst, false cyst. 2. A cyst whose wall is 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; 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: bradyzoite. Origin: pseudo-+ G. Kystis, bladder (05 Mar 2000) |
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| pancreatic pseudocyst | Cyst-like space not lined by epithelium and contained within the pancreas. (12 Dec 1998) |
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| pseudocyst |
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. Cf. pancreatic phlegmon, under phlegmon. 3. a cluster of small, comma-shaped forms of Toxoplasma gondii (bradyzoites), perhaps containing thousands of organisms, enclosed by an irregular wall, and representing a resting stage, as opposed to the active, motile stage (tachyzoite); pseudocysts are found in the tissues, especially muscles and the brain, in chronic (latent) toxoplasmosis. Called also tissue cyst.
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