Cancer Screening Tools Flashcards
Nearly all cases of oral squamous cell carcinoma arise from _____________.
Precursor epithelial changes (oral epithelial dysplasia)
T/F: Clinical oral exams have good sensitivity and specificity for identifying oral cancer.
True
T/F: Trained auxiliaries are nearly as accurate at an oral exam as dentists.
True
What is the difference between a screening test and case-finding test?
Screening: used on people apparently free of disease
Case-finding: analyze abnormal clinical finding or symptomatic patient for a diagnosis
T/F: The BrushTest is a screening test.
False
Case-finding test
T/F: The BrushTest is designed to be used on lesions suspicious for dysplasia or cancer.
False
Suspicious lesions get immediate scalpel biopsy
T/F: The BrushTest provides a diagnosis.
False
T/F: The BrushTest is the only device we have studied that is not a screening test.
True
What is chemiluminescence?
Emission of light as the result of chemical reaction
What will normal and abnormal cells look like under the ViziLite?
Normal = dark Abnormal = acetowhite
T/F: There is clear evidence that ViziLite improves detection of oral lesions.
False
What is the acronym for VELscope?
Visually Enhanced Lesion scope
T/F: VELscope is based on the concept of chemiluminescence.
False
ViziLite = chemiluminescence
VELscope = tissue fluorescence
What will normal and abnormal cells look like under the VELscope?
Normal = pale green autoflourescence
Abnormal = reduced autofluorescence (dark)
T/F: There is substantial data to support the VELscope as a true screening tool.
False
How is the VELscope best used?
Evaluate spots under VELscope to take a closer look at via clinical exam
T/F: The VELscope can be used in a case-finding role.
True
Delineate margin of known lesion
Which screening tool incorporates fluorescence and liquid-based cytology?
OralID
T/F: Most oral cancers are diagnosed in stage III or IV.
True
Much lower prognosis
What are the high-risk sites for oral cancer?
Ventro-lateral tongue, floor of mouth, lateral soft palate/anterior tonsillar pilars
What are our current best defenses against oral cancer?
- Patient education
2. Visual and tactile examination
