| mother cyst | A hydatid cyst from the inner, or germinal, layer, from which secondary cyst's containing scoleces (daughter cyst's) are developed; sometimes tertiary cyst's (granddaughter cyst's) are developed within the daughter cyst's; occurs most frequently in the liver, but may be found in other organs and tissues; symptoms are those of a tumour of the part affected. Synonym: parent cyst. (05 Mar 2000) |
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| compound cyst | A cyst containing several compartments formed by membranous septa. Synonym: compound cyst. (05 Mar 2000) |
| mucous cyst | A retention cyst resulting from obstruction in the duct of a mucous gland. Synonym: mucocele. (05 Mar 2000) |
| wolffian cyst | A cyst lying in the broad ligaments of the uterus and arising from any mesonephric structures. (05 Mar 2000) |
| multilocular cyst | A cyst containing several compartments formed by membranous septa. Synonym: compound cyst. (05 Mar 2000) |
| Cowper's cyst | A retention cyst of a bulbourethral gland. (05 Mar 2000) |
| popliteal cyst | A synovial cyst in the popliteal space arising from the semimembranous bursa or the knee joint. (12 Dec 1998) |
| myxoid cyst | 1. A knot or knotlike mass. 2. <anatomy> A general term for a group of nerve cell bodies located outside the central nervous system, occasionally applied to certain nuclear groups within the brain or spinal cord, for example basal ganglia. 3. <oncology, tumour> A benign cystic tumour occurring on a aponeurosis or tendon, as in the wrist or dorsum of the foot, it consists of a thin fibrous capsule enclosing a clear mucinous fluid. (18 Nov 1997) |
| posttraumatic leptomeningeal cyst | A persistent cystic accumulation of cerebrospinal fluid with progressive loss of bone and dura, occurring at the site of a previous fracture. (05 Mar 2000) |
| haemorrhagic cyst | A cyst containing blood or resulting from the encapsulation of a haematoma. Synonym: blood cyst, haematocele, haematocyst, sanguineous cyst. (05 Mar 2000) |
| cyst | <anatomy> Any closed cavity or sac that is lined by epithelium often contains liquid or semi-solid material. Origin: Gr. Kystis = sac, bladder (09 Oct 1997) |
| cyst, baker's | A swelling in the space behind the knee (the popliteal space) composed of a membrane-lined sac filled with synovial fluid that has escaped from the joint. Named after the British surgeon William Morrant Baker (1839-1896). Also called a synovial cyst of the popliteal space. (12 Dec 1998) |
| cyst, meibomian | Also called a chalazian or a tarsal cyst, an inflammation of the oil gland of the eyelid. (12 Dec 1998) |
| cyst, pilonidal | A special kind of abscess that occurs in the cleft between the buttocks. Forms frequently in adolescence after long trips that involve sitting. (12 Dec 1998) |
| cyst, sebaceous | A sebaceous cyst is a rounded swollen area of the skin formed by an abnormal sac of retained excretion (sebum) from the sebaceous follicles. (12 Dec 1998) |