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  • dermoid cysts
  • While all ovarian cysts can range in size from very small to quite large, dermoid cysts are not classified as functional cysts. (wikipedia.org)
  • Dermoid cysts originate from totipotential germ cells (which are present at birth) that differentiate abnormally, developing characteristics of mature dermal cells. (wikipedia.org)
  • Dermoid cysts can appear in young children, often near the lateral aspect of the eyebrow (right part of the right eyebrow or left part of the left eyebrow). (wikipedia.org)
  • If dermoid cysts appear on the medial aspect, the possibility of an encephalocele becomes greater and should be considered among the differential diagnoses. (wikipedia.org)
  • Dermoid cysts develop during pregnancy. (wikipedia.org)
  • They occur when skin cells and things like hair, sweat glands, oil glands or fatty tissue get trapped in the skin as a baby grows in the womb.Dermoid cysts are present at birth (congenital) and are common. (wikipedia.org)
  • Spinal dermoid cysts are benign ectopic growths thought to be a consequence of embryology errors during neural tube closure. (wikipedia.org)
  • Dermoid cysts more often involve the lumbosacral region than the thoracic vertebrae and are extramedullary presenting in the first decade of life. (wikipedia.org)
  • Spinal abnormalities, e.g. intramedullary dermoid cysts may arise more frequently in the lumbosacral region (quite often at the level of the conus medullaris) and may be seen with other congenital anomalies of the spine including posterior spina bifida occulta as identified by the neuroradiological analysis. (wikipedia.org)
  • Mature teratomas include dermoid cysts and are generally benign. (wikipedia.org)
  • static bone cyst
  • The Stafne defect also tends to not increase in size or change in radiographic appearance over time (hence the term "static bone cyst"), and this can be used to help confirm the diagnosis. (wikipedia.org)
  • It was previously known by many names, including static bone cyst, Stafne idiopathic bone cavity, and salivary gland inclusions in the mandible, An early case of Stafne's defect has been discovered in a 7th-century BC adult male individual from Klazomenai, one of the 12 cities of the Ionian League (now in modern Turkey). (wikipedia.org)
  • ranging from anatomic variants such as Stafne static bone cyst, to the aggressive aneurysmal bone cyst. (wikipedia.org)
  • Lesion
  • A and B, Axial ( A ) and coronal ( B ) unenhanced CT scans of the orbits show a well-defined water-density rounded lesion compatible with a cyst in the orbital floor abutting the inferior aspect of the globe and in continuity with the mid aspect of the lower eyelid ( arrows, A ). A pathologic specimen confirmed a simple ductal cyst of the accessory lacrimal glands. (ajnr.org)
  • salivary
  • The Stafne defect (also termed Stafne's idiopathic bone cavity, Stafne bone cavity, Stafne bone cyst (misnomer), lingual mandibular salivary gland depression, lingual mandibular cortical defect, latent bone cyst, or static bone cyst) is a depression of the mandible on the lingual surface (the side nearest the tongue). (wikipedia.org)
  • excision
  • Often, the tracts of the cyst will pass near important structures, such as the internal jugular vein, carotid artery, or facial nerve, making complete excision impractical. (wikipedia.org)
  • Sometimes complete excision is not practical if the cyst is in a dumbbell configuration, whereby it extends through a suture line in the skull. (wikipedia.org)
  • Mandibular
  • The most common location of dentigerous cysts are the Mandibular 3rd Molars and the Maxillary Canines, and they rarely involve deciduous teeth and are occasionally associated with odontomas. (wikipedia.org)
  • columnar
  • The cyst wall is composed of either squamous or columnar cells with lymphoid infiltrate, often with prominent germinal centers. (wikipedia.org)
  • Histopathology showed the cyst wall to be multi-layered and composed of pseudo-stratified columnar epithelium with goblet cells [Figure A and [Figure B. (ijri.org)
  • Figure 5 (A and B): (A) Cyst wall is multilayered with pseudostratified columnar epithelium lining (arrow). (ijri.org)
  • 1 , 2 ] This is lined by single layer of cuboidal/columnar epithelium or rarely with pseudostraitified squamous epithelium. (pubmedcentralcanada.ca)
  • The cell shapes can range from columnar, to squamous, to transitional epithelium. (wikipedia.org)
  • thymic
  • pathological findings such as thymic cysts are also known to have increased uptake. (hindawi.com)
  • Given that pulmonary metastases of differentiated thyroid cancer are rare, thymic cysts, though also rare, must be part of the differential diagnosis for false positive findings on an I-131 survey. (hindawi.com)
  • Thymic cyst 9. (wikipedia.org)
  • tumors
  • Tumors that may arise along the pharyngeal mucosal space such as squamous cell cancer of the tonsilar fossa. (scribd.com)
  • They are the most common non-glial tumors in childhood [ 2 ], and originate from the embryonic remains of squamous cells through the hypophyseal-pharyngeal duct [ 1 - 3 ]. (jneuro.com)
  • lymphoepithelial
  • Summary: Intrathyroidal lymphoepithelial cysts are rare, and only 15 such cases have been reported. (ajnr.org)
  • Since the first report of intrathyroidal lymphoepithelial cyst (ILCs) in 1989 (9) , only 15 cases of ILCs have been reported in the literature. (ajnr.org)
  • keratin
  • Microscopically, the cyst was lined by squamous epithelium with evidence of keratin formation ( Fig 5 ). (ajnr.org)
  • Keratin, anucleate squames, and cell debris were present in the cyst. (ajnr.org)
  • debris
  • Cuboidal epithelium lines the cyst, which contains amorphous eosinophilic debris. (nih.gov)
  • A thin-walled cyst containing eosinophilic debris is present in the wall of the vagina. (nih.gov)
  • On cytologic smears, there were many mature superficial squamous cells with intact nuclei, anucleate squames, clusters of neutrophils and lymphocytes, macrophages, and in the background, amorphous debris ( Fig 2 ). (ajnr.org)
  • The cyst may contain granular and keratinaceous cellular debris. (wikipedia.org)
  • A final diagnosis of bilateral nasolabial cysts with debris representing proteinaceous secretions or hemorrhage within was considered. (ijri.org)
  • ovarian
  • Post operatively, sebaceous material was aspirated from the 5x6 cm right sided ovarian cyst. (ispub.com)
  • A 5cm right ovarian cyst with attached fallopian tube and a separately sent uterus with cervix were received in formalin. (ispub.com)
  • Dermoid ovarian cysts which are larger present complications which might require removal by either laparoscopy or laparotomy (traditional surgery). (wikipedia.org)
  • Large ovarian cyst Dermoid cyst in vaginal ultrasonography A complex cyst due to a dermoid as seen on ultrasound A complex cyst due to a dermoid as seen on CT. (wikipedia.org)
  • Ovulation is accepted as the cause of ovarian cortical inclusion cysts, the precursor lesions of serous carcinomas, and lower numbers of these cortical inclusion cysts are thought to be the mechanism by which reducing lifetime ovulations can lower the risk of developing HGSC. (wikipedia.org)
  • While until recently HGSC was thought to arise from simple differentiation of cortical inclusion cysts (CICs) of ovarian surface epithelium (OSE), the cell origin of HGSC is now understood to be much more complex, with evidence for other sites of origin, both intra- and extra-ovarian, having come to light. (wikipedia.org)
  • cortical
  • We report an eight years female child of symptomatic giant Rathke's cleft cyst extending from right parasellar, paraventricular region to right fronto-temporo-parietal cortical surface which is an unusual site for Rathke's cyst. (pubmedcentralcanada.ca)
  • histologic
  • however, cysts with histologic features of branchial cysts have been reported in unusual locations, such as the thymus, oral cavity (1) , parotid gland (2) , pancreas (3, 4) , and thyroid (5-11) . (ajnr.org)
  • In some cases, a powerful 3T (Tesla) MRI scanner can help define the location of critical brain structures affected by the tumor.The histologic pattern consists of nesting of squamous epithelium bordered by radially arranged cells. (wikipedia.org)
  • Histologic examination revealed a cyst lined by a layer of cuboidal epithelium surrounded by a layer of spindled myoepithelial cells. (ajnr.org)
  • duct
  • Obstruction of the excretory duct of any lacrimal gland results in the entity called dacryops, or simple ductal cyst. (ajnr.org)
  • The duct persists as a midline structure forming an open connection between the back of the tongue and the thyroid gland.This opening can lead to fluid accumulation and infection, which necessitate the removal of the duct. (wikipedia.org)
  • However, the continued presence of the duct can often lead to complications due to infections and fluid buildup. (wikipedia.org)
  • The glands in the mucosa of the duct will continue their secretions until the fluid forms a cyst or exit the duct via the opening in the foramen cecum. (wikipedia.org)
  • Local infections, such as colds, tonsillitis, or inflammation of the lymph nodes in the area can also lead to the accumulation of fluid within the duct. (wikipedia.org)
  • Three-fourths of abnormalities within a persistent thyroglossal duct involve the formation of a cyst. (wikipedia.org)
  • If a persistent thyroglossal duct becomes fluid filled it will form a thyroglossal duct cyst, which accounts for 70% of congenital neck masses and is the most likely diagnosis if the mass is along the midline of the neck. (wikipedia.org)
  • Enclosed vesicles and cysts can also be seen while studying the tissue of the duct. (wikipedia.org)
  • Nasopalatine duct cyst iii. (wikipedia.org)
  • Thyroglossal duct cyst 4. (wikipedia.org)
  • vaginal
  • A prominent thin-walled cyst is present in the vaginal wall. (nih.gov)
  • A sign of vaginal obstruction is hydrocolpos, that is, accumulation of watery fluid within the vagina. (wikipedia.org)
  • nasolabial
  • Bilateral nasolabial cysts are of rare occurrence. (ijri.org)
  • This case report describes the multimodality imaging appearance of bilateral nasolabial cysts with a review of literature. (ijri.org)
  • Patil AR, Singh AP, Nandikoor S, Meganathan P. Bilateral nasolabial cysts - case report and review of literature. (ijri.org)
  • Nasolabial cysts are usually unilateral and have a strong female predilection. (ijri.org)
  • developmental
  • In addition to the developmental origin, some authors have suggested that periapical inflammation of non-vital deciduous teeth in proximity to the follicles of unerupted permanent successors may be a factor for triggering this type of cyst formation. (wikipedia.org)
  • Developmental lateral periodontal cyst vii. (wikipedia.org)
  • symptomatic
  • Till now, only 155 cases of symptomatic Rathke's cleft cyst have been reported, of which 11 cases are suprasellar Rathke's cleft cyst with normal sella, but cases of parasellar, paraventricular Rathke's cleft cyst are distinctly uncommon and we have not found it reported in literature yet. (pubmedcentralcanada.ca)
  • There are cysts, e.g. buccal bifurcation cyst with self-resolation nature, in which close observation can be employed unless the cyst is infected and symptomatic. (wikipedia.org)
  • thyroid
  • Macroscopically, a cyst with two loculi, 2 and 2.5 cm in diameter, respectively, was seen in the right lobe of the thyroid. (ajnr.org)
  • However, the cells are less likely to metastasize in the cyst, than if they were present in the actual thyroid gland. (wikipedia.org)
  • cell
  • Histopathologic examination showed a collapsed cyst lined by two distinct cell layers. (ajnr.org)
  • C, High-power view of the cyst lining shows a double cell layer, confirming the ductal origin of the cyst. (ajnr.org)
  • METS (squamous cell cancer). (scribd.com)
  • Popular sites of origin for squamous cell cancer to invade the carotid space include the larynx. (scribd.com)
  • superficial
  • The lymphatic circulation begins with blind ending (closed at one end) highly permeable superficial lymph capillaries, formed by endothelial cells with button-like junctions between them that allow fluid to pass through them when the interstitial pressure is sufficiently high. (wikipedia.org)
  • pathology
  • The pathology of cyst formation, inflammation and immune response have been always questioned [ 4 ]. (jneuro.com)
  • lesions
  • Radiologists should be aware of these rare lesions so as to include them in the differential diagnosis of orbital cysts. (ajnr.org)
  • Vagina
  • Vagina - Cyst in a female F344/N rat from a chronic study. (nih.gov)
  • Vagina - Cyst should be diagnosed but need not be graded. (nih.gov)
  • It may extend to become hydrometrocolpos, that is, accumulation of watery fluid within the vagina as well as within the uterus. (wikipedia.org)
  • The cyst, which can feel like a pea, is formed by a blockage in glands which normally supply the opening of the vagina. (wikipedia.org)
  • histological
  • On histological examination, the cysts were found to be lined partly or completely by macrophages and foreign body type giant cells. (ispub.com)