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  • Title: AgNORs in benign, borderline and transitional cell neoplasms of the urinary bladder.
    Author: Misra V, Mukherjee J, Gupta SC, Tandon S, Gupta AK.
    Journal: APMIS; 1998 Oct; 106(10):987-92. PubMed ID: 9833702.
    Abstract:
    Argyrophilic nucleolar organizer regions (AgNORs) were studied in 106 tissue samples from the urinary bladder (6 normal transitional epithelium, 5 cystitis, 12 hyperplastic, 14 dysplastic lesions, 12 carcinoma in situ, 4 transitional cell carcinoma grade 0, 12 grade I, 15 grade II and 12 grade III) to evaluate their role in differentiating benign, borderline and malignant lesions. The NOR counts presented a rising scale from normal (2.21), inflammatory (3.93 for both cystitis and hyperplasia), dysplastic (4.16), carcinoma in situ (5.08) to malignant lesions (5.28 grade I, 6.59 grade II and 8.37 grade III). It was concluded that AgNORs do not have a diagnostic role in these lesions, but that they can act as a reliable adjunct to existing parameters in the early detection of tumour recurrence and grading of malignant neoplasms.
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