Name: ____Answer Key______Oral Pathology DAPA 741 Examination Three November 13, 2002
Identify whether the following statements (1-10) are true (A) or false (B).
1. An idiopathic bone cavity is treated by opening into the cavity and allowing blood to flow in. A
2. A central giant cell granuloma is a slowly growing lesion most commonly found in the posterior mandible. B
3. Necrotizing sialometaplasia will resolve within a few months without treatment. A
4. The most common malignant salivary gland tumor is mucoepidermoid carcinoma. A
5. A mucocele is encapsulated and therefore feels freely moveable. B
6. Ameloblastoma, although considered benign, can be a locally aggressive tumor. A
7. An ameloblastoma most commonly occurs in the anterior mandible.
8. A pyogenic granuloma often grows rapidly and has in ulcerated surface similar to a malignant lesion.
9. The congenital epulis of the newborn has a histologic appearance similar to a granular cell tumor but also causes proliferation of the overlying epithelium mimicking squamous cell carcinoma.
10. A cystic hygroma is a lymphangioma in the neck.
11. Which of the following lesions is found exclusively on the gingiva?
a. Pyogenic granuloma b. Peripheral ossifying fibroma c. Peripheral giant cell granuloma d. Two of the above e. All of the above
12. The classic triad of Sjogren’s syndrome is a. Xerostomia, xerophthalmia, osteoarthritis b. Parotid swelling, xerostomia and lymphoma c. Xerostomia, xerophthalmia and lymphoma d. Xerostomia, xerophthalmia and rheumatoid arthritis e. Xerostomia, xerophthalmia and parotid swelling
13. Which of the following lesions is caused by the human papilloma virus (HPV)? a. Squmaous papilloma b. Keratoacanthoma c. Condyloma acuminatum d. Two of the above e. All of the above
14. Which of the following lesions usually occurs in the midline of the neck and often moves vertically when the patient swallows? a. Lymphoepithelial cyst b. Branchial cleft cyst c. Thyroglossal duct cyst d. Two of the above e. All of the above
15. A brown tumor of hyperparathyroidism looks histologically similar to a a. Hematopoietic defect b. Central giant cell granuloma c. Ossifying fibroma d. Chronic osteomyelitis
16. (1 pt)What is the most common salivary gland tumor?
17. (1 pt)What is the most common site for most salivary gland tumors?
18. (2 pts)Explain the pathogenesis of a mucocele.
19. (1pt) Why does chronic osteomyelitis not respond to antibiotic therapy alone?
20. (3 pts) Explain the differences between the clinical appearance of a benign mesenchymal tumor and a malignant mesenchymal tumor (sarcoma).
21. (3pts) Explain the differences between the clinical presentation of a benign salivary gland tumor and a malignant salivary gland tumor.
What is the most likely diagnosis of the following lesions (1pt each)?
22.
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25. (3pts)What are the three most likely diagnosis for this lesion?
26. (5pts) Case One. A 45 year-old male presents with a swelling of four years duration at the junction of the hard and soft palates. The swelling is not painful and has slowly increased in size. Your examination reveals a well circumscribed, firm, slightly lobulated lesion of the palate right of the midline. The lesion is not ulcerated but appears slightly blue in the center. It feels fixed to the underlying structures and overlying mucosa.
27. (7 pts)The following radiograph is from a 19 year-old male. There is slight expansion in the left posterior maxilla. The radiograph was taken to determine why the second molar did not erupt. Describe the lesion and give you differential diagnosis.
28. (5pts) This radiograph is from a 68 year-old female. She presents concerned about a painful area of 6 weeks duration on the left maxilla. The second premolar was extracted one month ago without resolution of the pain or swelling. The first molar is mobile and does not respond to vitality testing. A radiograph reveals a diffuse radiolucent lesion associated with the root of the maxillary left first molar. What is your differential diagnsosis?