| endothelial cyst | A serous cyst whose sac is lined with endothelium. (05 Mar 2000) |
|---|---|
| ependymal cyst | A circumscribed distention of some portion of the central canal of the spinal cord or of the cerebral ventricles. Synonym: neural cyst. (05 Mar 2000) |
| trichilemmal cyst | A common cyst of the skin and subcutis which contains sebum and keratin, and is lined by pale-staining stratified epithelial cells derived from follicular trichilemma. Synonym: trichilemmal cyst. (05 Mar 2000) |
| epidermal cyst | Intradermal or subcutaneous saclike structure, the wall of which is stratified epithelium containing keratohyalin granules. (12 Dec 1998) |
| epithelial cyst | A cyst lined with epithelium. (05 Mar 2000) |
| eruption cyst | A form of dentigerous cyst in the soft tissues in conjunction with an erupting tooth; seen on the alveolar ridge of children. (05 Mar 2000) |
| tubular cyst | A cyst formed by the dilation of any occluded canal or tube. Synonym: tubular cyst. (05 Mar 2000) |
| junctional cyst | A cyst of the testis arising from the structures connecting the rete testis with the epididymis. (05 Mar 2000) |
| extravasation cyst | An obsolete term for haemorrhagic cyst. (05 Mar 2000) |
| exudation cyst | A cyst resulting from distention of a closed cavity, such as a bursa, by an excessive secretion of its normal fluid contents. (05 Mar 2000) |
| false cyst | 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) |
| keratinous cyst | An epithelial cyst containing keratin. (05 Mar 2000) |
| umbilical cyst | A small red sessile or pedunculated tumour at the umbilicus in an infant; it is due to the persistence of a segment of the vitellointestinal duct. Synonym: umbilical cyst. (05 Mar 2000) |
| unicameral bone cyst | A unilocular cyst containing serous fluid and lined with a thin layer of connective tissue, occurring usually in the shaft of a long bone in a child. Synonym: idiopathic bone cavity, osteocystoma, simple bone cyst, traumatic bone cyst, unicameral bone cyst. (05 Mar 2000) |
| unicameral cyst | A cyst having a single sac. Synonym: unicameral cyst. (05 Mar 2000) |