Subclassifying atypical gynecologic Papanicolaou smears successfully stratifies patients for risk of a significant underlying lesion. Subclassifying atypical urine cytology specimens also may be of value.
A literature review and summary of personal experience with urine cytology specimens were performed.
Although a wide range of atypical urinary specimens exists, most can be categorized into a limited number of patterns. Different patterns are associated with different levels of risk for either low grade or high grade urothelial neoplasms.
Subclassification of urinary cytology specimens may be of value in stratifying patients for their risk of either low grade or high grade urothelial carcinoma. Awareness of these patterns may aid in evaluating urinary cytology specimens. Cancer (Cancer Cytopathol)