Urinary system

Laura Snyder, Davis Seelig

Research output: Chapter in Book/Report/Conference proceedingChapter


Fine-needle aspiration biopsy of the kidneys and urinary bladder to obtain cells for cytopathologic evaluation is a simple, rapid, safe, and relatively inexpensive procedure. The primary indications for cytopathologic examination of the urinary tract include unilateral or bilateral renomegaly, discrete urinary bladder masses or urinary bladder wall thickening, and urethral masses. Cytopathologic evaluation of the urinary tract can frequently distinguish between common causes of organomegaly (inflammation, cyst, and neoplasia), direct further diagnostics (e.g., culture or tissue biopsy), or preclude unwarranted surgical intervention (e.g., in cases of metastatic neoplasia).

Original languageEnglish (US)
Title of host publicationCanine and Feline Cytopathology
Subtitle of host publicationA Color Atlas and Interpretation Guide
Number of pages17
ISBN (Electronic)9780323683685
ISBN (Print)9780323683692
StatePublished - Jan 1 2022

Bibliographical note

Publisher Copyright:
© 2023 Elsevier Inc. All rights reserved.


  • cytology
  • cytopathology
  • kidney
  • renal
  • transitional cell carcinoma
  • ureter
  • urinary bladder
  • urothelial carcinoma
  • veterinary


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