Term
|
Definition
| Pathologic cavity lined by epithelium and often containing a fluid or semi-solid material |
|
|
Term
| Palatal cysts of newborn definition |
|
Definition
| Small developmental inclusion cysts on palate (or alveolar ridge) of newborn arising from different types of epithelial remnants |
|
|
Term
| Types of Palatal Cysts of the Newborn |
|
Definition
| Epstein's pearls, Bohn's nodules, Dental lamina cysts |
|
|
Term
| Epstein's pearls (type of Palatal cyst of newborn) |
|
Definition
| Along median palatal raphe derived from epithelium entrapped during fusion of palatal shelves to form secondary palate |
|
|
Term
| Bohn's nodules (type of Palatal cysts of newborn) |
|
Definition
| Scattered over hard palate, often near junction w/ soft palate derived from ducts of accessory salivary glands |
|
|
Term
| Dental lamina cysts (type of Palatal Cysts of newborn) |
|
Definition
| On alveolar ridges derived from dental lamina remnants |
|
|
Term
| Histological features of palatal cysts of newborn |
|
Definition
| Keratin filled cysts lined by stratified squamous epithelium |
|
|
Term
How common are palatal cysts of newborn?
What are the clinical features? |
|
Definition
65-85% if all neonates
1-3 mm white or yellow-white papules |
|
|
Term
| Treatment and prognosis of palatal cysts of the newborn |
|
Definition
No treatment
Good - generally disappear |
|
|
Term
| Other names for Nasolabial cyst |
|
Definition
Nasoalveolar cyst
Klestadt cyst |
|
|
Term
| Definition of Nasolabial cyst |
|
Definition
| Rare developmental cyst occuring in upper lip lateral to midline |
|
|
Term
| Pathogenesis theory 1 of nasolabial cyst |
|
Definition
| fissural cyst from epithelial remnants trapped along line of fusion of maxillary, median nasal and lateral nasal processes (prob. not this one) |
|
|
Term
| Pathogenesis theory 2 of nasolabial cyst |
|
Definition
| derived from misplaced epithelium of nasolacrimal duct |
|
|
Term
| Clinical features of nasolabial cyst |
|
Definition
| swelling of upper lip lateral to midline causing elevation of ala of nose |
|
|
Term
| Consequence of nasolabial cyst |
|
Definition
| Often elevates mucosa of nasal vestibule, obliterates max mucolabial fold and may cause nasal obstruction or interfere with wearing of denture |
|
|
Term
| Incidence of nasolabial cyst |
|
Definition
Most common in adults
Female predominance (3/1)
10% bilateral |
|
|
Term
| Radiographic features of nasolabial cyst |
|
Definition
| generally absent except occasional faint lucency due to pressure resorption of underlying bone |
|
|
Term
| Histologic features of nasolabial cyst |
|
Definition
(true cyst) most commonly lined by pseudostratified columnar epithelium, often with goblet cells and cilia (respiratory)
May be cuboidal or squamous metaplasia |
|
|
Term
| Treatment and prognosis of nasolabial cyst |
|
Definition
Complete surgical removal
Good, recurrence rare |
|
|
Term
| Globulomaxillary cyst definition |
|
Definition
| Originally described as developmental cyst in maxilla in region b/t lateral and canine teeth and arising from epithelium entrapped during fusion of globular portion of median nasal process with maxillary process |
|
|
Term
| How does a globulomaxillary cyst present radiographically? |
|
Definition
| Pear-shaped (b/t maxillary lateral and canine) |
|
|
Term
| Current definition of globulomaxillary cyst |
|
Definition
Clinicopathologic presentation of a variety lesions, mostly odontogenic cysts but include some others
(Virtually all contemporary studies demonstrate non-embryologic origins, most commonly odontogenic) |
|
|
Term
| Characteristics of globulomaxillary cysts |
|
Definition
Histologic features depend on actual entity
Cysts in this position do demonstrate some respiratory type epithelium probably because proximity to sinus lining
True fissural globulomaxillary cyst prob does not exist
|
|
|
Term
| Nasopalatine duct cyst is also known as... |
|
Definition
|
|
Term
| Definition of Nasopalatine cyst |
|
Definition
| Developmental cyst arising from remnants of nasopalatine duct, an embryologic structure connecting oral and nasal cavities in area of incisive canal |
|
|
Term
| How common is Incisve canal cyst? |
|
Definition
Most common non-odontogenic cyst ~1% of population
4th-6th decade of life
Predominantly male |
|
|
Term
| Most common S&Ss of Nasopalatine duct cyst |
|
Definition
may be long-standing & intermittent - swelling of anterior palate, drainage, pain
Many asymptomatic, detected on radiographs |
|
|
Term
| True or False: Nasopalatine duct cyst usually results in nonvital teeth. |
|
Definition
| False, teeth are usually vital |
|
|
Term
| Radiographic shape of nasopalatine duct cyst |
|
Definition
|
|
Term
| Radiographic features of nasopalatine duct cyst |
|
Definition
| Often with sclerotic border, located at or near midline of anterior maxilla b/t or apical to central incisors |
|
|
Term
| Can root resorption be seen in nasopalatine duct cyst? |
|
Definition
|
|
Term
| What is is called if nasopalatine duct cyst is confined to soft tissue? |
|
Definition
|
|
Term
| Histologic features of nasopalatine duct cyst |
|
Definition
lined by stratified squamous epithelium, pseudostratified columnar ciliated, simple columnar, simple cuboidal or any combination
Wall of cyst often contains nerves, blood vessels, occasional lobules of mucous glands, small islands of cartilage and chronic inflammation |
|
|
Term
| Treatment and Prognosis of nasopalatine duct cyst |
|
Definition
Surgical enucleation w/ or following microscopically documented diagnosis
Good |
|
|
Term
| Median palatal cyst definition |
|
Definition
Rare fissural cyst theoretically developing from epithelium entrapped along embryonic line of fusion of lateral palatal shelves of maxilla
(some if not most may represent posteriorly positioned nasopalatine duct cyst) |
|
|
Term
| Clinicoradiographic features of median palatal cyst |
|
Definition
Firm or fluctuant swelling of midline of hard palate posterior to palatine papilla
Well-circumscribed radiolucency in midline of hardpalate, occasionaly diverging roots of centrals |
|
|
Term
| Who exhibit median palatal cysts seen? |
|
Definition
Most common in young adults
Male just as likely as female |
|
|
Term
| Histologic features of median palatal cyst |
|
Definition
| lined by stratified squamous epithelium, occasionally respiratory (pseudostratified columnar ciliated) |
|
|
Term
| Treatment and prognosis of median palatal cyst |
|
Definition
|
|
Term
| Definition of median mandibular cyst |
|
Definition
| Non-inflammatory cyst occuring in midline of mandible |
|
|
Term
| Theory of median mandibular cyst |
|
Definition
| fusion does not occur - just filling out of isthmus, no epithelium exists to be entrapped |
|
|
Term
| What type of cyst do median mandibular cysts represent? |
|
Definition
| Odontogenic - should be managed as such |
|
|
Term
| Defintion of follicular cysts of skin |
|
Definition
| Common keratin-filled lesions arise from one or more portions of hair follicle |
|
|
Term
| Most common type of follicular cyst? |
|
Definition
| Epidemoid or infundibular cyst |
|
|
Term
| Prevalence of eidemoid cysts |
|
Definition
|
|
Term
| Most common location for follicular cysts |
|
Definition
| Acne prone areas (head, neck, and back) |
|
|
Term
| Histology of follicular cysts |
|
Definition
| stratified squamous epithelium, granular cell layer then cavity filled with degenerating orthokeratin |
|
|
Term
| Treatment and prognosis of follicular cyst (epidemoid) |
|
Definition
Conservative surgical excision
Good |
|
|
Term
|
Definition
|
|
Term
| Histologic features of dermoid cyst |
|
Definition
| Lined by epidermis-like epithelium and contains dermal adnexal structure in cyst wall |
|
|
Term
| Most common location of dermoid epithelium |
|
Definition
| Midline of floor of mouth |
|
|
Term
| Type of epithelium dermoid cyst is lined with |
|
Definition
| orthokeratinized stratified squmous epithelium w/ prominent granular cell layer |
|
|
Term
| Treatment of dermoid cyst |
|
Definition
|
|
Term
| Thyroglossal duct cyst definition |
|
Definition
| developmental cyst arising from epithelial remnants of embryonic thyroglossal duct |
|
|
Term
| Thryoglossal duct cyst occurs in... |
|
Definition
| 1st 2 decades of life; 50% before age 20; no gender predilection |
|
|
Term
| Location of thyroglossal duct cyst |
|
Definition
| occur anywhere along thyroglossal duct from foramen cecum area to suprasternal notch |
|
|
Term
| Characteristics of thyroglossal duct cyst |
|
Definition
Usually painless, fluctuant movable swelling unless secondarily infected; lesions at base of tongue may cause laryngeal obstruction
If cyst maintains attachment to hyoid bone or tongue, it will move vertically during swallowing or protrusion of tongue |
|
|
Term
| Features of thyroglossal duct cyst |
|
Definition
Most smaller than 3 cm, may reach up to 10
Fistulous tract to skin or mucosa may develop, usually from rupture of infected cyst or following surgery |
|
|
Term
| Histologic features of thyroglossal duct cyst |
|
Definition
cyst usually lined by columnar or stratified squamous epithelium
Thyroid tissue may be present |
|
|
Term
| Treatment and prognosis of thyroglossal cyst |
|
Definition
surgical removal of cyst + midline segment of hyoid bone and adjacent muscle
Good (papillary thyroid carcinoma develops in 1% of cases) |
|
|
Term
| Another name for cervical lymphoepithelial cyst is... |
|
Definition
|
|
Term
| Definition of cervical lymphoepithelial cyst |
|
Definition
| Developmental cyst of lateral neck though to arise from remnants of branchial clefts |
|
|
Term
| Alternate theory to cervical lymphoeptihelial cyst |
|
Definition
| development of cystic changes in parotid gland epithelium entrapped in upper cervical lymph nodes during embryonic life |
|
|
Term
| Prevalence of cervical lymphoepithelial cyst |
|
Definition
|
|
Term
| Clinical features of cervical lymphoepithelial cyst |
|
Definition
Soft fluctuant mass 1-10 cm in diameter in upper lateral neck along anterior bord of SCM m
2/3 on left, 1/3 on right occasionally bilateral |
|
|
Term
| Are cervical lymphoepithelial cysts painful? |
|
Definition
| May be associated with pain or tenderness due to secondary infection |
|
|
Term
| Histologic features of branchial cleft cyst |
|
Definition
| true cysts lined by stratified squamous (90%) or respiratory (10%) epithelium |
|
|
Term
| Treatment and prognosis of cervical lymphoepithelial cyst |
|
Definition
Complete surgical removal
Good (Rare cases of malignant transformations arising in epitheliulm of CLEC; pre-surgical biopsy can be useful to r/o malignancy) |
|
|
