Table 1: Advantages and disadvantages of various screening methods for cervical
cancer.
|
S. No. |
Screening Techniques |
Advantages |
Disadvantages |
|
1. |
Pap
smear |
·
Helps find
cervical cancer before it spreads when it is easier to treat. ·
Early detection
may mean less treatment. ·
History of
widely accepted ·
Well trained
and professional are needed. ·
High
specificity |
·
May be a false
positive/false negative or even lead to death due to overdiagnosis. ·
Long time is
needed for results to come ·
Systems
requires time communication ensurity of test reports and follow-up of
patients ·
Requires
laboratory quality assurance ·
Less
sensitivity |
|
2. |
HPV
test |
·
Can detect
nearly all cases of dysplasia. ·
More effective
overall due to better detection of detecting high-grade dysplasia. |
·
Likely to
detect changes of abnormal cell which are not cancerous cells. ·
Thus, leading
to unnecessary treatment, including surgery of cervix. |
|
3. |
Visual
screening for cervical neoplasia Visual
inspection with Lugol’s iodine (VILI) |
·
VIA and VILI
are relatively simple and less costly ·
Results are
available immediately.
|
·
High provider
variability ·
Lower
specificity ·
Lack of
standardization ·
Frequent
retraining needed |
|
4. |
Cytology |
·
The accuracy
and specificity of the test are usually over 90%. |
·
It is
uncomfortable and painful. ·
Under poor
conditions its sensitivity can be as low as 38%. |
|
5. |
Liquid-based
cytology (LBC) |
·
Less time is
required for samples |
·
Expensive
instruments ·
Less
sensitivity and specificity |
|
6. |
HPV
DNA testing |
·
Easy and simple
test ·
High
specificity |
·
Results not
immediately available with high cost. ·
Complex
laboratory requirements and specimen. ·
Low specificity
|