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Cysts oral path test 3


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unilocular radiolucency at apex of NON-vital tooth. Most common radiolucency

Periapical granuloma

unilocular radiolucency at apex of NON-vital tooth +/- root resorption. Most common jaw cyst and odontogenic cyst (rests of Malassez).

Periapical (radicular) cyst

Found on buccal aspect of mandibular 1st molars of VITAL teeth in children displacing the roots lingually

3. Inflammatory Buccal Cyst aka buccal bifurcation cyst

most common developmental odontogenic cyst, second most common odontogenic cyst. Fluid accumulation between REE and follicle unilocular >4mm radiolucency assoc w/ crown impacted

Dentigerous (Follicular) Cyst

remnants of dental lamina  aggressive unilocular (small) or multilocular (large) smooth/cloudy (keratin) radiolucency. Causes tooth displacement > resorption, found in jaw esp. p

Odontogenic Keratocyst (OKC) aka Primordial Cyst

mutation of Patched gene  Major criteria: multiple odontogenic keratocysts (2nd decade), multiple basal cell carcinomas (3rd decade), calcified falx cerebri (by age 20) and palmar/p

Nevoid Basal Cell Carcinoma Syndrome

rests of Serres  asymptomatic, non-inflammatory, round-tear drop shaped, unilocular, radiolucency in bone adjacent to root of a VITAL tooth.

Lateral periodontal cyst

rests of Serres  uni/multilocular, +/- scattered radiopacities with well defined margins commonly found intra-osseous of anterior jaws.
adenomatoid odontogenic tumor, odontoma

Calcifying Odontogenic Cyst

epithelial remnants form fusion of palate w/in nasopalatine canal  asymptomatic, well-defined heart shaped radiolucency between max CI’s +/- root divergence.

Nasopalatine duct cyst, aka incisive canal cyst
(1) variant: cyst of palatine papilla: solft tissue only
(2) variant: median palatal cyst: posterior presentation

cystic change of epithelial rests  extra osseous soft tissue cyst commonly found on the canine-mucobuccal fold (upper lip).

Nasolabial cyst; Tx: curettage

indentation of lingual surface of posterior mandible below IAN by normal salivary gland tissue. Common (males), How do you treat?

Lingual Mandibular salivary gland depression aka Stafne bone cyst, static bone cyst

trauma (post mandible of teenage males)  interradicular scalloping, empty intrabony cavity lacking epithelial lining, Also, Is this a true cyst?

Solitary Bone Cyst aka Traumatic (Simple) Bone Cyst. NOT a true cyst (aka pseudocyst)

rare, destructive, well defined, rapid expansile lesion often associated with antecedent bone lesion of posterior jaws. 50% painful. Histo: similar to CGCG w/ sinusoidal blood spaces.

Aneurysmal Bone Cyst; Not a true cyst (pseudocyst)

epithelial remnants; midline swelling (most below hyoid); MOST COMMON developmental cyst of the neck.

Thyroglossal Tract (Duct) Cyst

developmental cyst of anterior floor of mouth above(displaces tongue)/below(midline swelling) the mylohyoid. Histo: epithelial lining + CT wall contains skin appendages

Dermoid Cyst

proliferation of epithelial islands in cervical lymph nodes; asymptomatic enlargement of lateral neck, teens-20’s. Histo: epithelial lined cyst + lymphoid tissue in wall.

Branchial Cleft Cyst aka Cervical Lymphoepithelial Cyst
What do PA granuloma, PA Cyst and Inflammatory buccal cyst have in common?
They are all inflammatory odontogenic cysts
Dentigerous cysts, odontogenic keratocysts, lateral periodontal cysts, calcifying odontogenic cysts, and glandular odontogenic cysts are all what group of cysts?
Developmental odontogenic cysts
Name the 2 developmental Non-odontogenic cysts
Nasoplatine duct cyst; nasolabial cyst
Static Bone cyst, Focal osteoporotic bone marrow defect, traumatic bone cyst, and aneurysmal bone cyst are all what type of cyst?
What do the following have in common: thyroglossal tract cyst, dermoid cyst, branchial cleft cyst
soft tissue cysts of the neck
What is the fancy name for remnants of the dental lamina?
rests of serres
What is the fancy name for remnants of Hertwig's root sheath?
Rests of Malassez
T or F: Most developmental odontogenic cysts are derived from epithelial remnants of the rests of Malassez.
False; from the rests of serres
T or F: Periapical cysts are derived from rests of serres.
False; generally from rests of malassez
T or F: Dentigerous cysts are derived from the reduced enamel epithelium
What are the rests called associated with reduced enamel epithelium?
enamel organ rests
What is the difference between a cyst and a pseudocyst?
Pseudocyst has no epithelial lining

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