What is a liquid-based cytology test?
Liquid-based cytology (LBC) is a new method of preparing cervical samples for cytological examination. Unlike the conventional ‘smear’ preparation, it involves making a suspension of cells from the sample and this is used to produce a thin layer of cells on a slide.
What is the difference between Pap smear and liquid-based cytology?
Background: Liquid-based cervical cytology was developed to improve the diagnostic reliability of Papanicolaou (Pap) smears. Conventional Pap smears can have false-negative and false-positive results because of inadequate sampling and slide preparation, and errors in laboratory detection and interpretation.
What liquid is used in liquid-based cytology?
Turbitec® (Labonord SAS, Templemars, France) is a centrifuge method of liquid-based cytology using an alcoholic fixative fluid, Easyfix® (Labonord). It is now well accepted that the association of liquid-based cytology and human papillomavirus test is indissociable of cervical screening.
How do you take liquid-based cytology?
LBC is a new method of cervical cell sample preparation. Samples are collected in the usual way, but using a brush-like device rather than a spatula. The head of the device is rinsed or broken off into a vial of preservative fluid so that most or all of the cervical cells are retained.
Why is the liquid-based Pap test is preferred?
Liquid-based Pap smears improve the diagnostic sensitivity of cervical cytology screening. They have the additional benefit of enabling easy testing for human papillomavirus (HPV). Thin Prep and SurePath are 2 methods currently approved by the FDA.
What are the advantages of using the liquid-based Pap test method?
Liquid-based cytology (LBC) has advantages of fewer unsatisfactory smears, faster and more efficient method, more accurate interpretation, less obscuring materials such as blood, mucous, inflammatory cells in smears and the use of residual cell suspension for testing human papillomavirus (HPV) DNA and …
What cytology is used for?
Cytology is the exam of a single cell type, as often found in fluid specimens. It’s mainly used to diagnose or screen for cancer. It’s also used to screen for fetal abnormalities, for pap smears, to diagnose infectious organisms, and in other screening and diagnostic areas.
Is cervical cytology same as Pap smear?
For many years, cytology-based screening, known as the Pap test or Pap smear, was the only method of screening. Its use reduced cervical cancer incidence and deaths in countries where screening is common.
What is the false negative rate for conventional Pap smears?
For any screening test there is an inherent false negative rate, which is approximately 10 to 20 percent for Pap smears. Despite the false negative tests, the success of the cervical cytology screening program has led patients to expect 100 percent accuracy.
How many types of cytology are there?
There are two main kinds, or branches, of cytology: exfoliative cytology and intervention cytology. Healthcare providers can use cytology tests for almost all areas of your body.
What is squamous intraepithelial lesion low-grade?
Low-grade squamous intraepithelial lesion (LSIL) is a common abnormal result on a Pap test. It’s also known as mild dysplasia. LSIL means that your cervical cells show mild abnormalities. A LSIL, or abnormal Pap result, doesn’t mean that you have cancer. The tissue that covers your cervix is made up of squamous cells.