Odontogenic Tumors
1-.........is the most common odontogenic tumor.
A) Ameloblastoma.
B) Pindborg tumor
C) Adenomatoid odontogenic tumor
D) Odontoma.
2-Which type of ameloblastoma show squamous metaplasia:
A) Granular Ameloblastoma.
B) Acanthomatous Ameloblastoma.
C) Haemangioameloblastoma.
D) Macrocystic Ameloblastoma.
3-A 40 year old man has ameloblastoma, the histomorphologic features will be:
A) Peripheral palisading cellular strands with central loose stellate reticulum.
B) Peripheral palisading cellular strands with peripheral loose stellate reticulum.
C) Peripheral palisading cellular strands with central stromal retraction artefact.
D) Central loose stellate reticulum shows marked nuclear atypia and numerous mitotic figures. .
4-Odontogenic keratocyst has the following feature:
A) Low recurrence rate.
B) Occurs due to infection periapically.
C) Common in posterior mandible.
D) Can be treated by enucleation.
5-Compound odontoma appears on the radiograph as:
A) Masses of calcified areas.
B) Distinguishable tooth like structures.
C) Radiolucent and radiopaque areas.
D) Radiolucent areas.
6- Which of the following is a true neoplasm of functional cementoblastoma?
A) Periapical cemental dysplasia.
B) Familial cemental dysplasia.
C) Cementoblastoma.
D) Hypercementosis.
7-Which amongst the following doesn't represent a hamartomatous proliferation?
A) Lymphangioma
B) Complex odontoma
C) Ameloblastic fibroma
D) Compound odontoma
8-Histological type of ameloblastoma doesn't affect the type of treatment..Ameloblastoma can occur peripherally within buccal mucosa.
A) The first sentence is true and the second sentence is false.
B) The first sentence is false and the second sentence is true.
c) The two sentences are true
D) The two sentences are false
9-Ameloblastoma is a benign mixed odontogenic tumor..Gigantiform cementoma is a benign neoplasm of odontogenic tissue.
A) The first sentence is true and the second sentence is false.
B) The first sentence is false and the second sentence is true.
c) The two sentences are true
D) The two sentences are false
10-Lesions always associated with vital teeth:
A) Condensing Ostitis.
B) Cementoma.
C) Periapical Abscess.
D) None of the above.
11-An odontogenic neoplasm that may be mistaken for an ameloblastoma but is a mixed tissue origin and considerably less aggressive is:
A) Cementoblastoma
B) Odontogenic fibroma
C) cementifying fibroma
D) ameloblastic fibroma
12-The odontoma which resembles anatomy of normal teeth is a:
A) Composite odontoma.
B) Compound odontoma.
C) Complex odontoma.
D) Hairy odontoma.
13-Which of the following lesions is characterized by presence of liesegang rings?
A) Ameloblastoma.
B) Calcifying epithelial odontogenic tumor.
C) Odontoma.
D) Cementoblastoma
14-The odontogenic lesion that show snow flecks is:
A) Ameloblastic fibroma.
B) Compound odontoma.
C) Complex odontoma
D) Adenomatoid odontogenic tumor
15-Locally destructive lesion that rarely metastasize:
A) Fibroma.
B) Papilloma.
C) Ameloblastoma.
D) None of the above.
16-Which one of the following does not contribute to histogenesis of ameloblastoma?
A) Developing dental papilla
B) Developing dental organ
C) Epithelial lining of odontogenic cyst
D) Rests of dental lamina
17-A mixed radiopaque-radiolucent appearance is typically seen in ________ variant of ameloblastoma.
A) Plexiform.
B) Basaloid.
C) Desmoplastic.
D) Granular cell.
18-Which amongst the following histological variants of ameloblastoma is considered to be the most aggressive clinically?
A) Basaloid.
B) Granular cell.
C) Desmoplastic.
D) Acanthomatous.
19-Select a false statement regarding ameloblastoma from the statements given below
A) Slowly growing, locally invasive tumor
B) Trabecular pattern is one of the histological subtypes
C) Radiographically seen as well-defined, multilocular radiolucency
D) Predilection for occurring in posterior mandibular region
20-Which amongst the following radiographic appearances is most likely to represent a conventional ameloblastoma?
A) Ill-defined, radiolucency
B) Well-defined unilocular radiopacity attached to root of tooth
C) Well-defined, mixed radiopaque-radiolucent lesion in anterior maxilla.
D) “Soap bubble/Honeycomb” radiolucent defects with scalloped margins
21-Which amongst the following is not a histological subtype of unicystic ameloblastoma?
A) Intramural
B) Intraluminal
C) Luminal
D) Mural
22-Which amongst the following odontogenic tumors is considered to be the least aggressive clinically?
A) Conventional ameloblastoma
B) Clear cell odontogenic carcinoma
C) Ameloblastic fibrosarcoma
D) Adenomatoid odontogenic tumor
23-Areas of amorphous, eosinophilic, amyloid like extracellular masses are typically seen in which of the following lesions?
A) Squamous odontogenic tumor
B) Unicystic ameloblastoma
C) Calcifying epithelial odontogenic tumor
D) Odontoma
24-Unicystic ameloblastoma presenting as a well-circumscribed radiolucency surrounding the crown of an unerupted/impacted tooth is most likely to be diagnosed as
A) Conventional ameloblastoma
B) Unicystic ameloblastoma
C) Squamous odontogenic tumor
D) Dentigerous cyst
25-The mesenchymal component of ameloblastic fibroma closely resembles
A) Dental organ
B) Dental follicle
C) Dental lamina
D) Dental papilla
26-Which amongst the following lesions occurs more frequently in anterior maxilla?
A) Adenomatoid odontogenic tumor
B) Unicystic ameloblastoma
C) Calcifying epithelial odontogenic tumor
D) Cementoblastoma
27-Which is the least likely lesion to be considered in the differential diagnosis of a hard, bony swelling in posterior mandibular region which appears radiographically as a well defined multilocular radiolucency in association with an impacted mandibular 3rd molar?
A) Adenomatoid odontogenic tumor
B) Ameloblastoma
C) Ameloblastic fibroma
D) Calcifying epithelial odontogenic tumor
28-A cellular fibroblastic lesion containing occasional inactive odontogenic epithelial rests, occurring in posterior mandibular region is suggestive of
A) Central odontogenic fibroma
B) Conventional ameloblastoma
C) Pindborg tumor
D) Unicystic ameloblastoma
29-A radiopaque mass that is fused to one or more tooth roots and surrounded by a thin radiolucent rim is highly suggestive of
A) Cementoblastoma
B) Pindborg tumor
C) Fibrous dysplasia
D) Odontogenic myxoma
30-Dense fibrous connective tissue stroma which appears more prominent than the neoplastic ameloblastic epithelium is seen in which subtype of ameloblastoma?
A) Follicular
B) Plexiform
C) Acanthomatous
D) Desmoplastic
31-Compound odontoma shows
A) Mixed tissue of dental origin with no resemblance to tooth structure
B) Numerous tooth like structures with denticles commonly found in maxillary lateral incisors.
C) haphazardly arranged calcified mass.
D) All of the above.
32-Adenomatoid odontogenic tumor is characterized histologically by:
A) Polyhedral epithelial cells
B) Tubular/duct like cells
C) Stellate shaped cells
D) Stratified squamous epithelial cells
33-A Patient with ameloblastoma of the jaw can best be treated by:
A) Irradiation
B) Excision
C) Enucleation
D) Surgical removal with 1 cm of normal bone (safety margin)
34-Which of the following statement is true about a malignant ameloblastoma?
A) Cytopathologic features of malignancy seen in primary, recurrent or any metastatic tumor foci.
B) Cytopathologic features of malignancy seen only in primary tumor.
C) Cytopathologic features of malignancy seen only in metastatic tumor.
D) Metastasizing tumor that is cytopathologically similar to its benign counterparts in both primary and metastatic deposits.
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