Deck 10: Cysts of the Jaws and Neck

Question 1

A 16-year-old patient was found to have a unicystic radiolucency in the body of the mandible between the roots of vital teeth nos. 28 and 29. Thin parakeratinized epithelium was found lining the cystic space on biopsy. This is a(n):

A) Lateral root cyst
B) Traumatic bone cyst
C) Odontogenic keratocyst
D) Laterally positioned periapical cyst
E) Cyst of dental lamina

Answer 1

Odontogenic keratocyst

Question 2

A 43-year-old man presents with an asymptomatic anterior palatal swelling. A radiograph shows a 1 * 1 cm lucency and divergence of roots of teeth nos. 8 and 9. All teeth in the area are vital. This is most likely a(n):

A) Periapical granuloma
B) Aneurysmal bone cyst
C) Nasopalatine canal cyst
D) Globulomaxillary cyst
E) Dermoid cyst

Answer 2

Nasopalatine canal cyst

Question 3

All the following are associated with vital teeth except _____ cyst.

A) Nasopalatine canal
B) Gingival
C) Periapical
D) Lateral periodontal
E) Dentigerous

Answer 3

Periapical

Question 4

The odontogenic keratocyst:

A) Is a premalignant lesion
B) Is associated with nonvital teeth
C) Has a significant recurrence rate
D) Typically causes pain or numb lip
E) None of the above

Question 5

An inflammatory process in the area of epithelial rests of Malassez is regarded as the stimulus for the development of which of the following?

A) Odontogenic keratocyst
B) Radicular cyst
C) Traumatic bone cyst
D) Dentigerous cyst
E) Lateral periodontal cyst

Question 6

The nevoid basal cell carcinoma syndrome includes multiple basal cell carcinomas, bone abnormalities, and multiple:

A) Traumatic bone cysts
B) Calcifying odontogenic cysts
C) Oral squamous carcinomas
D) Oral mucosal hamartomas
E) None of the above

Question 7

The dentigerous cyst:

A) Is most often seen in the third molar area
B) May undergo neoplastic transformation to ameloblastoma
C) Is always radiolucent
D) May be multilocular
E) All the above

Question 8

The lesion that may present anywhere from the foramen caecum to the middle of the neck is known as:

A) Globulomaxillary cyst
B) Thyroglossal tract cyst
C) Acute lymphadenitis
D) Branchial cyst
E) Lymphoepithelial cyst

Question 9

A periapical cyst:

A) Is of developmental origin
B) Is histologically keratinized
C) Is always painful
D) Causes death of the dental pulp
E) Is associated with a nonvital tooth

Question 10

A submucosal mass developed in the midline of the floor of the mouth of a 34-year-old man. It was asymptomatic and had a solid, doughy consistency. This would most likely be which of the following?

A) Odontogenic keratocyst
B) Branchial cyst
C) Dermoid cyst
D) Squamous cell carcinoma
E) Squamous papilloma

Question 11

The periapical cyst lining develops because of inflammatory stimulation of which of the following types of epithelium?

A) Junctional epithelium
B) Crevicular epithelium
C) Surface epithelium
D) Reduced enamel epithelium
E) Rests of Malassez

Question 12

Which of the following would most likely present as an asymptomatic midline swelling of the neck?

A) Branchial cyst
B) Dermoid cyst
C) Acute lymphadenitis
D) Globulomaxillary cyst
E) None of the above

Question 13

A clinical differential diagnosis of an asymptomatic submucosal lump or nodule in the dorsum of the tongue would include all the following except:

A) Traumatic fibroma
B) Neurofibroma
C) Granular cell tumor
D) Salivary gland tumor
E) Dermoid cyst

Question 14

The static bone cyst, if biopsied, exhibits which of the following microscopic features?

A) Virtually nothing, as it represents a dead space
B) Hematopoietic tissue
C) Fibrous tissue lined by respiratory-type epithelium
D) Salivary gland and other soft tissues that normally reside in the area
E) Granulation tissue and giant cells

Question 15

A cystic lesion at the apex of tooth no. 10 was described microscopically as an inflamed fibrous sac lined by nonkeratinized stratified squamous epithelium. The tooth was nonvital. This is a(n):

A) Odontogenic keratocyst
B) Periapical cyst
C) Periapical granuloma
D) Traumatic bone cyst
E) Globulomaxillary cyst

Question 16

Two cystic radiolucencies in the mandible of a 16-year-old boy were lined by thin parakeratinized epithelium showing palisading of basal cells. All teeth were vital and the patient had no symptoms. This patient has which of the following?

A) Odontogenic keratocysts
B) Periapical granulomas
C) Periapical cysts
D) Traumatic bone cysts
E) Central mucoepidermoid carcinomas

Question 17

An asymptomatic 2 * 3 cm mass in the lateral neck of a 25-year-old man was biopsied. Microscopically, it was a cyst surrounded by lymphoid tissue. The diagnosis would be:

A) Epidermal inclusion cyst
B) Ectopic lymphoid tissue
C) Branchial cyst
D) Thyroglossal tract cyst
E) Dermoid cyst

Question 18

The traumatic bone cyst:

A) Is a pseudocyst
B) Is a developmental defect
C) Requires surgical excision
D) Is found inferior to the mandibular canal
E) All the above

Question 19

A submucosal mass developed in the midline of the floor of the mouth of a 34-year-old man. It was asymptomatic and had a solid, doughy consistency. This would most likely be which of the following?

A) Odontogenic keratocyst
B) Branchial cyst
C) Dermoid cyst
D) Squamous cell carcinoma
E) Squamous papilloma

Question 20

When a diagnosis of odontogenic keratocyst is made, the patient should be advised about the:

A) Need for full mouth extractions
B) Association with colonic polyps
C) Associated recurrence rate
D) Likelihood of malignant transformation
E) None of the above

Question 21

Pain may be associated with all the following except:

A) Osteoblastoma
B) Chronic osteomyelitis
C) Odontogenic keratocyst
D) Chronic periapical abscess
E) Acute pulpitis

Question 22

Which of the following cells would be seen in a periapical granuloma?

A) Fibroblasts
B) Lymphocytes
C) Plasma cells
D) Macrophages
E) All the above

Question 23

Which of the following is a true nonodontogenic cyst of the jaws?

A) Traumatic bone cyst
B) Nasopalatine canal cyst
C) Globulomaxillary cyst
D) Dentigerous cyst
E) Lateral root cyst

Question 24

Traumatic bone cysts are characteristically seen in which of the following age groups?

A) Children younger than 10 years
B) Teenagers
C) Adults between the ages of 30 and 50 years
D) Adults over the age of 60 years
E) There is no age predilection for this pseudocyst.

Question 25

Lung metastasis is a well-documented complication after surgical treatment of which of the following?

A) Calcifying epithelial odontogenic tumor
B) Odontogenic keratocyst
C) Odontogenic myxoma
D) Cementoblastoma
E) None of the above

Question 26

An adult patient presents with chronic low-grade pain associated with tooth no. 9 in which there is a root canal filling. A biopsy of a periapical radiolucency associated with the tooth shows granulation tissue and scar lined by nonkeratinized epithelium. This patient has:

A) Granulomatous infection
B) Periapical granuloma
C) Periapical cyst
D) Periapical cemento-osseous dysplasia
E) Odontogenic keratocyst

Question 27

Which of the following odontogenic lesions always appears radiographically as a radiolucent lesion?

A) Periapical granuloma
B) Odontogenic myxoma
C) Odontogenic keratocyst
D) Ameloblastoma
E) All the above

Question 28

Which of the following mandibular conditions is least likely to cause numb lip?

A) Periapical abscess
B) Metastatic carcinoma of the lung
C) Osteosarcoma
D) Periapical granuloma
E) Multiple myeloma

Question 29

A commonly occurring cyst of the jaws in newborns is _____ cyst.

A) Globulomaxillary
B) Gingival
C) Lateral root
D) Dentigerous
E) Calcifying odontogenic

Question 30

All the following are considered to be relatively common except:

A) Dentigerous cyst
B) Odontoma
C) Calcifying odontogenic cyst
D) Periapical granuloma
E) Periapical cyst

Question 31

Ameloblastomatous transformation is a potential risk that has been associated with which of the following?

A) Dentigerous cyst
B) Thyroglossal tract cyst
C) Stafne's bone cyst
D) Aneurysmal bone cyst
E) None of the above

Question 32

If an odontogenic cyst goes untreated, which of the following complications may be seen?

A) Expansion with bone resorption
B) Neoplastic transformation of the epithelial lining
C) Pathologic fracture
D) Movement or resorption of teeth
E) All the above

Question 33

All the following are associated with vital teeth except _____ cyst.

A) Nasopalatine canal
B) Gingival
C) Periapical
D) Lateral periodontal
E) Dentigerous

Question 34

Microscopically, abundant multinucleated giant cells are seen in a benign connective tissue matrix in all the following except:

A) Central giant cell granuloma
B) Cherubism
C) Periapical granuloma
D) Hyperparathyroidism
E) Peripheral giant cell granuloma

Question 35

Which of the following jaw lesions develops from odontogenic epithelium?

A) Static bone cyst
B) Aneurysmal bone cyst
C) Gingival cyst of the adult
D) Nasopalatine canal cyst
E) All the above

Question 36

A 14-year-old boy presents with an asymptomatic, well-defined radiolucent lesion in the posterior aspect of his mandible. The lesion is found in association with an impacted molar. Which of the following should be included in a differential diagnosis?

A) Dentigerous cyst
B) Paget's disease
C) Osteoblastoma
D) Odontoma
E) Periapical cemento-osseous dysplasia

Question 37

Bifid ribs, calcified falx cerebri, and other skeletal abnormalities are associated with which of the following?

A) Gardner's syndrome
B) Cleidocranial dysplasia
C) Albright's syndrome
D) Nevoid basal cell carcinoma syndrome
E) Osteogenesis imperfecta

Question 38

What is the most likely diagnosis for a lesion in a patient with an asymptomatic midline radiolucency (1 cm in diameter.) between the apices of teeth nos. 8 and 9? Both teeth are carious and they test nonvital with thermal and electric stimuli.

A) Globulomaxillary cyst
B) Calcifying odontogenic cyst
C) Nasopalatine canal cyst
D) Dentigerous cyst
E) Radicular (periapical) cyst

Question 39

On routine radiographic examination, an 18-year-old patient was found to have a 2 *3 cm radiolucency in the body of the mandible that extended between the roots of teeth nos. 19, 20, and 21. All his teeth were vital, he had no impactions, and he had no symptoms. Which of the following should be included in the differential diagnosis?

A) Dentigerous cyst
B) Traumatic bone cyst
C) Periapical granuloma
D) Lymphoepithelial cyst
E) Stafne's bone cyst