Brush Cytology

Self-Study Examination

Instructions: After studying the text answer the following true/false or multiple choice questions. Remember, there's only one answer to each question.

1.	What is the most significant factor responsible for high mortality rate from oral cancer?

a) lethal nature of oral cancer
b) lack of knowledge on the part of dentists
c) delayed diagnosis
d) patient indifference
e) lack of proper diagnostic tools and techniques

2.	The 5-year survival rate for patients with localized oral cancer is:

a) 0.2
b) 0.5
c) 0.8

3.	Bruch cytology is a preferred early detection technique to biopsy in asymptomatic patients.

a) true
b) flase

4.	Dysplastic and cancerous cells tend to have:

a) stronger bond with each other and to the surrounding normal cells
b) fewer and weaker connections to each other and to the surrounding normal cells

5.	Abnormal cells within an oral precancerous or cancerous lesion are generally found:

a) in the deepest, basal cell layer of the lesion
b) intermediate layer
c) surface of the lesion

6.	The oral brush biopsy collects cell specimens from which of the following layers of the lesion?

a) basal
b) intermediate
c) superficial
d) all of the above

7.	The oral brush biopsy requires topical or local anesthetic.

a) true
b) flase

8.	The very high sensitivity and specificity of oral brush biopsy can be attributed to:

a) cells from all layers are collected
b) highly specialized image processing system used
c) both a and b

9.	When oral brush biopsy returns a positive result it must be confirmed with an incisional or punch biopsy.

a) true
b) flase