Abstract
The urinary tract consists of the kidney, ureters, bladder, and urethra. Urine is one of the most common non-gynecological cytologic specimens evaluated, as it provides a convenient method by which clinicians can screen and triage patients with urinary symptoms or a history of exposure to bladder-toxic agents, as well as follow-up patients with prior bladder cancer. This chapter details the cytomorphologic spectrum of normal urothelial cells and diagnostic pitfalls associated with normal urinary tract elements likely to be encountered in urine cytology. This chapter also highlights normal structures of the kidney and provides an overview of the utility of fine needle aspiration in the evaluation of kidney lesions and diagnostic pitfalls associated with misinterpretation of normal renal and nonrenal elements.
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Lew, M. (2022). Urinary Tract. In: Lew, M., Pang, J., Pantanowitz, L. (eds) Normal Cytology. Springer, Cham. https://doi.org/10.1007/978-3-031-20336-7_8
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