Understanding Urinary System Pathology in Dogs

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Questions and Answers

What do clear and colorless crystals with barely perceptible ragged to linear borders in cytopathologic preparations from renal aspirates suggest?

  • Calcium oxalate crystals (correct)
  • Leukocytes
  • Oxalic acid metabolite
  • Ethylene glycol

Which structure is the large size suggestive of in the provided text?

  • Glomerulus
  • Collecting duct (correct)
  • Renal artery
  • Renal pelvis

What is the pigmentation seen in the cytopathologic specimen in Figure 11.8 indicative of?

  • Renal pelvis
  • Lipofuscin (correct)
  • Renal artery
  • Crystals

Which type of crystals have been associated with outbreaks of nephrotoxicosis caused by contaminated pet food ingestion?

<p>Calcium oxalate crystals (B)</p> Signup and view all the answers

What can the presence of round to dumbbell-shaped crystals in renal histopathology and urine sediment cytopathology suggest?

<p>Neoplasia (A)</p> Signup and view all the answers

What can be misleadingly suggestive of a well-differentiated melanocyte tumor according to the text?

<p>Lipofuscin pigmentation (C)</p> Signup and view all the answers

Under what conditions do pale green to golden yellow, round to dumbbell-shaped crystals commonly appear?

<p>Nephrotoxicosis outbreaks (A)</p> Signup and view all the answers

What is the likely site of origin suggested by the presence of dark intracytoplasmic granules of lipofuscin in a cytopathologic specimen?

<p>Ascending loop of Henle (A)</p> Signup and view all the answers

What effect does the presence of leukocytes provide in relation to the structure's size in cytopathologic preparations?

<p>Increases the size perception (B)</p> Signup and view all the answers

What is the approximate diameter range of renal adenomas in dogs?

<p>0.5 to 2.0 cm (D)</p> Signup and view all the answers

Which primary renal neoplasm comprises about 65% of cases in dogs?

<p>Renal carcinoma (D)</p> Signup and view all the answers

What is a common presenting symptom in dogs with renal carcinoma?

<p>Progressive weight loss (A)</p> Signup and view all the answers

What is the approximate metastatic rate to other sites for malignant renal carcinomas?

<p>56% (C)</p> Signup and view all the answers

Which type of neoplasms can be mistaken for renal carcinomas due to their single, occasionally round cells?

<p>Nephroblastomas (D)</p> Signup and view all the answers

What characteristic cytologic feature can be observed in malignant renal epithelial neoplasms?

<p>Loose aggregates of small cells (B)</p> Signup and view all the answers

Which structure can nephroblastoma cells potentially mimic in appearance?

<p><strong>Glomerular structures</strong> (A)</p> Signup and view all the answers

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