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  • Title: Urine: beyond cytology for detection of malignancy.
    Author: Pattari SK, Dey P.
    Journal: Diagn Cytopathol; 2002 Sep; 27(3):139-42. PubMed ID: 12203859.
    Abstract:
    In the present review we discuss various ancillary modalities for detection of malignancies in urine samples, with an emphasis on urothelial carcinomas. Flow cytometry, bladder tumor antigen (BTA), nuclear matrix protein (NMP), matrix metalloproteinase (MMP), human chorionic gonadotrophic (HCG), telomerase, and other techniques are discussed. DNA FCM is a relatively costly and sophisticated technique. It has a practical application in the diagnosis of bladder cancer among subjects at high risk and is of value in monitoring the course of the disease and anticipating recurrence following conservative treatment. The BTA test is a simple, rapid, and inexpensive adjunct to cystoscopy and the results of the test are equivalent or superior to those of voided urinary cytology. NMP-22 immunoassay is a useful diagnostic test for predicting recurrence of urothelial malignancy. It is also a cost-effective and sensitive screening test for detecting tumor in patients with urothelial carcinoma. Beta-HCG estimation in urine samples appears to be an efficient diagnostic marker for the assessment of distant metastasis in bladder carcinoma rather than a screening test. Other ancillary techniques such as detection of expression of cytokeratin 20 by RT-PCR, MMP-9 estimation, and fluorescent in situ hybridization and telomerase activity are rarely applied clinically in routine urinary samples and are not cost-effective.
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