pseudocyst

1) An accumulation of fluid in a cyst-like loculus, but without an epithelial or other membranous lining. 2) A cyst whose wall is formed by the host & not the parasite. 3) A mass of 50 or more Toxoplasma bradyzoites, found within a host cell, frequently in the brain; formerly called a pseudo- cyst, 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, & apparently is infective to another vertebrate host.

Specific

myxoid cyst (mucous cyst, digital myxoid pseudocyst) pancreatic pseudocyst Stafne defect; Stafne idiopathic bone cavity

References

Stedman's Medical Dictionary 26th ed, Williams & Wilkins, Baltimore, 1995