1. All of the following are true with regards to cholesteatomas, EXCEPT:

2. A 41 y/o male presents with a nasal obstruction and septal perforation. Multiple biopsies are taken which shows predominately necrosis. Serologic studies are positive for a high c-ANCA titer. Based on these findings, what is the most likely diagnosis?

3. A 50 y/o male presents with a nasal mass, which is excised. Representative images of the lesion are shown. Immunohistochemistry of the lesions shows positivity for CD34. Based on these findings, what is the most likely diagnosis?

4. A 30 y/o male is found to have a buccal lesion. An excision was performed and representative images are shown. The best diagnosis is:

5. A 50 y/o female presents with a parotid mass. Based on representative images of this lesion shown on the website, which of the following is the best diagnosis?

6. All of the following are true about acinic cell carcinoma EXCEPT:

7. A 40 y/o female presents with a nasal obstruction. A mass is removed from the lateral wall, and representative hisotlogic images are shown. Based on the findings, the best diagnosis is:

8. A 40 y/o male presents with a parotid mass. Based on the histologic images, the best diagnosis is:

9. A mass was found in adjacent to the parotid gland. An excision was performed and representative sections are shown. Based on the findings, what is the best diagnosis?

10. Which of the following subtypes of nasopharyngeal carcinoma has the best prognosis?