Question 1

Which is the most significant factor for the development of squamous cell carcinoma?

Accepted Answer

The most significant risk factor for the development of squamous cell carcinoma is tobacco, including cigar, pipe, and cigarette smoking. Sun exposure is a risk factor for the development of basal cell carcinoma. The majority of cases occur in patients over the age of 40, which is a young population. Chronic irritants, such as an ill-fitting denture, are not initiating factors in the development of squamous cell carcinoma.

Question 2

Where is the most common intraoral location for the development of minor salivary gland tumors?

Accepted Answer

Intraorally, minor salivary gland tumors are located most commonly at the junction of the hard and soft palates. Minor salivary gland tumors rarely occur on the tongue. Minor salivary glands are not found in the interdental papilla. Minor salivary glands are found in the floor of the mouth, but this is not the most common location.

Question 3

Clinical signs and symptoms of a pleomorphic adenoma include the following except one. Which is the exception?

Accepted Answer

The pleomorphic adenoma is a slowly enlarging mass. Clinically, the pleomorphic adenoma appears as a nonulcerated mass. The pleomorphic adenoma is a painless lesion. Clinically, the pleomorphic adenoma is typically dome-shaped.

Question 4

The papilloma will appear whiter clinically because of additional amounts of what substance?

Accepted Answer

The color of the papilloma depends on the amount of surface keratin. The more keratin, the whiter the lesion will appear. Exudate is fluid with a high protein content and consists of white blood cells, fibrin and other protein molecules. Granulation tissue is the initial connective tissue formed in healing. The macrophage is the second type of white blood cell to arrive at the site of injury.

Question 5

All terms are associated with malignancy except one. Which is the exception?

Accepted Answer

Encapsulated signifies a growth surrounded by a capsule of fibrous connective tissue. This type of growth better describes a benign lesion. Invasive refers to the infiltration and active destruction of surrounding tissues, as seen with a malignant growth. Another term for cancer is malignancy. Metastasis is the transport of neoplastic cells to parts of the body remote from the primary tumor and the establishment of new tumors in those sites.

Question 6

Osteosarcoma occurs more often in the _____ and more often in _____.

Accepted Answer

Osteosarcoma occurs more often in the mandible than the maxilla and more often in males than in females. Osteosarcoma occurs more often in the mandible than the maxilla. Osteosarcoma occurs more often in males than in females.

Question 7

Which lesion most closely resembles a papilloma?

Accepted Answer

The papilloma presents as a small, exophytic, pedunculated growth composed of numerous papillary projections, similar to verruca vulgaris (common wart). A benign mixed tumor is a benign salivary gland tumor. Leukoplakia is a white plaque-like lesion that cannot be rubbed off and cannot be diagnosed clinically as a specific disease. Epithelial dysplasia may present as a red, white, or mixed red and white lesion.

Question 8

A _____ is a benign proliferation of capillaries.

Accepted Answer

A hemangioma is a benign proliferation of capillaries. It is a common vascular lesion considered by many to represent a developmental lesion rather than a tumor because hemangiomas do not generally exhibit an unlimited growth potential. A hemangioma rather than a hematoma is a benign proliferation of capillaries. A hemangioma rather than a hamartoma is a benign proliferation of capillaries. A hemangioma rather than a lymphangioma is a benign proliferation of capillaries.

Question 9

Which is the false statement about basal cell carcinoma?

Accepted Answer

Basal cell carcinoma does not occur in the oral cavity. Basal cell carcinoma does occur in fair-skinned persons. Basal cell carcinoma appears as a non healing ulcer with characteristic rolled borders. Basal cell carcinoma frequently arises on the skin of the face.

Question 10

What is the classic radiographic appearance of the ameloblastoma?

Accepted Answer

The classic radiographic appearance of an ameloblastoma is a multilocular soap bubble-like or honeycombed radiolucency. The adenomatoid odontogenic tumor appears as a well-defined radiolucency usually associated with an impacted tooth. The calcifying odontogenic cyst appears as a unilocular or multilocular radiolucency with calcifications within. Multilocular lesions with poorly defined borders that can cause tooth displacement may be seen with the odontogenic myxoma.

Question 11

Which intraoral lesion appears as a smooth red patch or a granular red and velvety patch?

Accepted Answer

Erythroplakia is a term to describe an intraoral lesion that appears as a smooth red patch or a granular red and velvety patch. A sarcoma is a malignant tumor of connective tissue. A papilloma appears as a white exophytic pedunculated growth. Leukoplakia appears as a white patch or plaque.

Question 12

What is the term to describe a malignant tumor in bone?

Accepted Answer

An osteosarcoma is a malignant tumor of bone. An osteoma is a benign tumor of bone. A lipoma is a benign tumor of fat. A carcinoma is a malignant tumor of epithelium.

Question 13

Approximately _____% of patients with chondrosarcoma involving the jaws survive 5 years after the diagnosis.

Accepted Answer

Approximately 30% of patients with chondrosarcoma involving the jaws survive 5 years after the diagnosis. Chondrosarcomas are treated with wide surgical excision. Radiation therapy and chemotherapy are not effective. The prognosis is poor. Approximately 30% rather than 10% of patients with chondrosarcoma involving the jaws survive 5 years after the diagnosis. Approximately 30% rather than 50% of patients with chondrosarcoma involving the jaws survive 5 years after the diagnosis. Approximately 30% rather than 70% of patients with chondrosarcoma involving the jaws survive 5 years after the diagnosis.

Question 14

The majority of adenomatoid odontogenic tumors occur in _____ years of age.

Accepted Answer

The majority (70%) of adenomatoid odontogenic tumors occur in females under 20 years of age. The maxilla is more commonly involved than the mandible. Many adenomatoid odontogenic tumors are associated with impacted teeth. The majority of adenomatoid odontogenic tumors occur in females under 20 years of age rather than females over 40. The majority of adenomatoid odontogenic tumors occur in females under 20 years of age rather than males over 40. The majority of adenomatoid odontogenic tumors occur in females under 20 years of age rather than males under 20.

Question 15

Because the origin of these tumors is glandular epithelium, benign tumors of salivary gland origin are termed

Accepted Answer

An adenoma is a benign tumor that originates from glandular epithelium. Nevi are tumors of melanocytes. A chondroma is a benign tumor of cartilage. A lipoma is a benign tumor of fat.

Question 16

What is the treatment for a benign cementoblastoma?

Accepted Answer

Treatment of the benign cementoblastoma consists of enucleation of the tumor and removal of the involved tooth. Treatment is required for the benign cementoblastoma. Surgical excision and drainage is not the correct treatment protocol. Surgery and radiation therapy is not required for the benign cementoblastoma.

Question 17

Leukoplakia cannot be diagnosed clinically as a specific disease; therefore, it must often be examined in a laboratory setting. When examined microscopically, leukoplakia may reveal the following except one. Which is the exception?

Accepted Answer

A hemangioma is a benign proliferation of capillaries. Early tumors of squamous cell carcinoma may reveal a leukoplakia appearance. When examined microscopically, a leukoplakia may show epithelial dysplasia in approximately 5% to 25% of cases. The laboratory results of a leukoplakia biopsy may also reveal a premalignant condition.

Question 18

Squamous cell carcinoma may appear anywhere in the oral cavity; where is the most common site?

Accepted Answer

Squamous cell carcinomas may occur anywhere in the oral cavity, but the most sites of involvement include the floor of the mouth. The gingiva is not a common site for squamous cell carcinoma. The retromolar pad is not a common site for squamous cell carcinoma. The midline of the hard palate is not a common site for squamous cell carcinoma, although it may appear on the soft palate.

Question 19

Surgery, chemotherapy, radiation therapy, or a combination of all three may be used to treat which lesion?

Accepted Answer

The rhabdomyosarcoma is an aggressive malignant tumor that is best treated by a combination of multidrug chemotherapy, radiation therapy, and surgery.

Question 20

A(n) _____ is composed of islands and sheets of polyhedral epithelial cells with deposits of amyloid-like material that is thought to represent a form of abnormal enamel protein.

Accepted Answer

A calcifying epithelial odontogenic tumor is composed of islands and sheets of polyhedral epithelial cells with deposits of amyloid-like material that is thought to represent a form of abnormal enamel protein. A calcifying epithelial odontogenic tumor, not an adenomatoid odontogenic tumor, is composed of islands and sheets of polyhedral epithelial cells. A calcifying epithelial odontogenic tumor, not an ameloblastoma, is composed of islands and sheets of polyhedral epithelial cells. A calcifying epithelial odontogenic tumor, not a mucoepidermoid carcinoma, is composed of islands and sheets of polyhedral epithelial cells.

Quiz 7: Neoplasia