Question 1

A 15-year-old patient has a numb lower lip and pain in the right posterior mandible. A radiograph shows slight thickening of the periodontal membrane space of tooth no. 30. The tooth shows slightly reduced vitality to electric pulp testing. Which of the following should be included in a differential diagnosis?

Accepted Answer

E

Question 2

Which of the following malignancies would most likely be seen in children?

Accepted Answer

Burkitt's lymphoma is a malignancy commonly seen in children, particularly in Africa. Osteosarcoma arising in Paget's disease is a rare form of bone cancer that typically occurs in adults. Multiple myeloma is a malignancy of plasma cells that is typically seen in older adults. Metastatic colon cancer can occur at any age, but it is more commonly seen in older adults.

Question 3

Osteosarcoma is known to be complication of which of the following?

Accepted Answer

Osteosarcoma is a known complication of Paget's disease. It is not commonly associated with neurofibromatosis, MEN III, or Gardner's syndrome.

Question 4

A radiolucent and radiopaque lesion in the maxilla of a 35-year-old woman was biopsied. It was a neoplasm composed of malignant cells making osteoid. This most likely represents:

Accepted Answer

The presence of malignant cells making osteoid indicates an osteosarcoma, which is a malignant bone tumor that can occur in the maxilla. Odontogenic myxoma, ameloblastoma, fibrous dysplasia, and odontoma are all benign tumors that do not involve the formation of osteoid.

Question 5

Which of the following signs/symptoms would be unlikely for a malignant neoplasm within the mandible?

Accepted Answer

The answer of Which of the following signs/symptoms would be...

Question 6

A 14-year-old girl developed an ill-defined radiolucency in her anterior mandible in association with a hypermobile tooth no. 25. She also had a numb lip. Which of the following should be suspected?

Accepted Answer

The answer of A 14-year-old girl developed an ill-defined radiolucency...

Question 7

Which of the following malignancies of the jaws characteristically affects the older adult population?

Accepted Answer

Metastatic adenocarcinoma to jaws is commonly seen in older adults. Sarcoma, Burkitt's lymphoma, and Ewing's tumor are more commonly seen in children or young adults.

Question 8

The Epstein-Barr virus may be associated with the etiology and pathogenesis of which of the following jaw lesions?

Accepted Answer

The Epstein-Barr virus is strongly associated with the development of Burkitt's lymphoma, a malignant neoplasm of B cells in the lymph nodes, jaw, and other organs. It is not associated with Garré's disease, Ewing's tumor, central giant cell granuloma, or osteogenesis imperfecta.

Question 9

An ill-defined radiolucent and radiopaque lesion in the maxilla of a 65-year-old woman was biopsied. Histologically, it was a solid neoplasm composed of malignant plasma cells. This most likely represents which of the following?

Accepted Answer

The presence of a solid neoplasm composed of malignant plasma cells points towards the diagnosis of multiple myeloma, a cancer of plasma cells that commonly presents with lytic lesions in the skull and other bones. The other options (ameloblastic fibroma, fibrous dysplasia, osteoblastoma, osteosarcoma) are unlikely since they do not typically show a combination of radiolucent and radiopaque features, or malignant plasma cell histology.

Question 10

All of the following are signs or symptoms that are associated with malignancy in the jaw except:

Accepted Answer

Hypercementosis, the excessive formation of cementum on the roots of teeth, is not typically associated with malignancy in the jaw. It can be related to other factors such as inflammation, trauma, or systemic conditions but not specifically indicative of cancer.

Quiz 14: Malignancies of the Jaws