Why is cytological analysis a useful diagnostic technique?
Cytologic evaluation is the analysis of cells from the body under a microscope. This is done to determine what the cells look like, and how they form and function. The test is usually used to look for cancers and precancerous changes. It may also be used to look for viral infections in cells.
What is an example of cytology?
For example, a common example of diagnostic cytology is the evaluation of cervical smears (referred to as the Papanicolaou test or Pap smear). In order for cytologic evaluation to be carried out, the material to be examined is spread onto glass slides and stained.
How does cytology work?
Cytology is the examination of cells from the body under a microscope. In a urine cytology exam, a doctor looks at cells collected from a urine specimen to see how they look and function. The test commonly checks for infection, inflammatory disease of the urinary tract, cancer, or precancerous conditions.
What are the two types of cytology?
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. Some common types of cytology tests include: Gynecologic cytology.
Is histology better than cytology?
Histopathology focuses on the architecture of the tissue and provides more information about the tissue than cytology. With this type of laboratory examination, the accuracy of a diagnosis is usually high.
What does a cytology test show?
Diagnosing diseases by looking at single cells and small clusters of cells is called cytology or cytopathology. It’s an important part of diagnosing some types of cancer.
What is abnormal cytology?
Urine cytology is a test to look for abnormal cells in your urine. It’s used with other tests and procedures to diagnose urinary tract cancers, most often bladder cancer. Your doctor might recommend a urine cytology test if you have blood in your urine (hematuria).
What is cytology infection?
The infection can be diagnosed by the cytopathologist from the appearances of multinucleate giant cells in Papanicolaou smears. The cytological diagnosis of this infection is of value to the gynecologist in identifying subclinical infection and in confirming clinically suspicious disease.
How accurate is cytology?
Urine cytology is associated with a significant false-negative rate, especially for low-grade carcinoma (10-50% accuracy rate). The false-positive rate is 1-12%, although cytology has a 95% accuracy rate for diagnosing high-grade carcinoma and CIS. Urine cytology is often the test used for diagnosis of CIS.
How accurate are cytology test?
Many studies have evaluated the accuracy of urine cytology in the detection of bladder cancer. Overall, the reported sensitivity ranges from 20% to 97.3%; specificity ranges from 74% to 99.5%.
Can cytology be wrong?
It’s much more common than you might have thought. The false-positive rate of endoscopic ultrasound fine-needle aspiration (EUS-FNA) cytology is thought not to exceed 1%.