| static bone cyst | An indentation on the lingual surface of the mandible within which a portion of the submandibular gland lies; it appears radiographically as a sharply circumscribed ovoid radiolucency between the mandibular canal and the inferior border of the posterior mandible. Synonym: Stafne bone cyst, static bone cyst. (05 Mar 2000) |
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| necrotic cyst | A cyst due to a circumscribed encapsulated area of necrosis with subsequent liquefaction of the dead tissue. (05 Mar 2000) |
| sterile cyst | A hydatid cyst without brood capsules or viable scoleces. (05 Mar 2000) |
| neural 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) |
| sublingual cyst | <medicine> A cyst formed under the tongue by obstruction of the duct of the submaxillary gland. Origin: L, a little frog, a little swelling on the tongue of cattle, dim. Of rana a frog. Source: Websters Dictionary (01 Mar 1998) |
| nonodontogenic cyst | <embryology> Cysts formed from epithelial inclusions in the lines of fusion of the embryonic processes which form the jaws. They include nasopalatine or incisive canal cyst, incisive papilla cyst, globulomaxillary cyst, median palatal cyst, median alveolar cyst, median mandibular cyst, and nasoalveolar cyst. (12 Dec 1998) |
| daughter cyst | A secondary cyst, usually multiple, derived from a mother cyst. (05 Mar 2000) |
| suprasellar cyst | <oncology, tumour> A form of primary brain tumour which develops in the pituitary gland. These tumours often secrete increased quantities of pituitary hormones (for example growth hormone) which can result in conditions such as gigantism and acromegaly. They are often benign and rare and comprise less than 5% of childhood brain tumours. Other symptoms include vision changes, headache and weight gain. Treatment often includes a combination of surgery and radiation therapy. (27 Sep 1997) |
| surgical ciliated cyst | A cyst that arises from maxillary sinus epithelium implanted along a line of surgical entry. (05 Mar 2000) |
| dental lamina cyst | A small keratin-filled cyst, usually multiple, on the alveolar ridge of newborn infants; derived from remnants of the dental lamina. (05 Mar 2000) |
| dentigerous cyst | most common follicular odontogenic cyst. Occurs in relation to a partially erupted or unerupted tooth with at least the crown of the tooth to which the cyst is attached protruding into the cystic cavity. May give rise to an ameloblastoma and, in rare instances, undergo malignant transformation. (12 Dec 1998) |
| synovial cyst | A nodular, tumourlike lesion in or about a tendon sheath or joint capsule, especially of the hands, wrists, or feet. It is not a true cyst as it lacks an epithelial wall, and it does not communicate with the underlying synovial space. The lesion represents a focal accumulation of mucin in the dermis of the dorsal aspect of the distal phalanges or, less often, other portions of the extremities. (12 Dec 1998) |
| synovial cyst, popliteal | A swelling in the space behind the knee (the popliteal space). The swelling is composed of a membrane-lined sac filled with synovial fluid that has escaped from the joint. Commonly called baker's cyst. (12 Dec 1998) |
| dermoid cyst | A collection of cancerous cells which form cysts that contain one or more of the three primary embryonic germ layers: skin, hair or teeth. (27 Sep 1997) |
| dermoid cyst of ovary | A common benign cystic teratoma of the ovary, lined for the most part by skin, and containing hair and sebum, but also usually containing a variety of other well differentiated structures within a small inwardly projecting mass of solid tissue. (05 Mar 2000) |