Risk of malignancy in renal biopsy: A review.

The risks of malignancy for cytologic categories in renal biopsy specimens differ from the risks in most other sites. There are obvious areas in which cytopathologists can do better at classifying these cases, and the routine use of immunohistochemistry and core‐needle biopsy may improve the accuracy of the classification of these specimens. In renal biopsy specimens, the risks of malignancy for cytologic categories are different than the risks of malignancy in most other sites, mostly because of the very high underlying malignancy rate, and there are obvious areas in which cytopathologists can do better at classifying these cases. The routine use of immunohistochemistry and core‐needle biopsy may improve the accuracy of the classification of these specimens. [ABSTRACT FROM AUTHOR]