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Detection of cervical carcinoma or intraepithelial lesions when screening women for possible cervical neoplasia
The ThinPrep Pap test is an alternative preparation method for the cervical Pap screening test. The method utilizes a liquid-based technique that replaces the direct smear method of the conventional Pap screen. This method is 1 of several technologies developed to improve visualization of cellular material by reducing smearing trauma, air drying artifact, and obscuring blood and inflammation. In addition, variability in smearing technique is eliminated as the majority of processing and preparation is performed in the laboratory under controlled conditions.
Squamous cell carcinoma of the cervix is believed to develop in progressive stages from normal through precancerous (dysplastic) stages, to carcinoma in situ, and eventually invasive carcinoma. This sequence is felt to develop over a matter of years in most patients.
Follow-up of the cervical Pap abnormality atypical squamous cells of undetermined significance (ASCUS) is costly and frustrating to patients and clinicians because a large percentage of these patients have normal colposcopic and biopsy findings. Yet, a significant percentage (10-15%) will have an underlying high-grade squamous intraepithelial lesion (HSIL).
If the patient has been previously diagnosed with an abnormal Pap result or is at high risk, considering ordering the diagnostic test 82039 / ThinPrep Diagnostic Without Physician Interpretation rather than this test.
Satisfactory for evaluation. Negative for intraepithelial lesion or malignancy.
Note: Abnormal results will be reviewed by a pathologist at an additional charge.
Standard reporting, as defined by the Bethesda System (TBS) is utilized.
The Pap test is a screening test for cervical cancer with inherent false-negative results. A negative human papillomavirus (HPV) test or Pap smear result does not preclude the presence of carcinoma or intraepithelial lesion. The false-negative rates of the Pap test range from 15% to 30%.
Studies have shown overall increased adequacy (as measured by decreased “unsatisfactory” and “satisfactory but limited by rates”) as compared to the conventional smear method. Some studies showing increased detection rates for epithelial cell abnormalities (low-grade squamous intraepithelial lesions and high-grade squamous intraepithelial lesions) as well as decreased indeterminate rates (atypical squamous cells of undetermined significance and atypical glandular cells of undetermined significance) have been reported in both split specimen (ThinPrep and conventional smears) and direct-to-vial comparison studies.
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