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Related Concept Videos

Renal Corpuscle01:20

Renal Corpuscle

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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
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  11. Suspected Renal Interstitial Cell Tumor Causing Polycythemia In Two Dogs

Suspected renal interstitial cell tumor causing polycythemia in two dogs

Kaori Ide1, Masaaki Katayama2, Ikki Mitsui3

  • 1Laboratory of Veterinary Small Animal Internal Medicine, Cooperative Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan.

The Journal of Veterinary Medical Science
|February 21, 2024

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View abstract on PubMed

Summary
This summary is machine-generated.

This case series describes two dogs with rare renal interstitial cell tumors (RICT) that caused elevated erythropoietin and polycythemia. Surgical removal of the tumors normalized these levels, suggesting a link between RICT and polycythemia.

Area of Science:

  • Veterinary Medicine
  • Oncology
  • Nephrology

Background:

  • Renal interstitial cell tumors (RICT) are rare in dogs.
  • Polycythemia, or an excess of red blood cells, can be caused by various renal tumors.
  • The link between RICT and polycythemia has not been previously documented in canine cases.

Purpose of the Study:

  • To report a case series of two dogs diagnosed with renal interstitial cell tumors (RICT).
  • To investigate the association between RICT, elevated serum erythropoietin levels, and polycythemia in dogs.
  • To describe the clinical and histopathological findings and treatment outcomes.

Main Methods:

  • Case presentation of two dogs with clinical signs of polycythemia.
  • Diagnostic evaluation including blood work and histopathology.
Keywords:
doginterstitial cell tumorkidneypolycythemia

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  • Surgical intervention involving nephrectomy (kidney removal).
  • Monitoring of serum erythropoietin levels and packed cell volume post-surgery.

    • Main Results:

    • Both dogs presented with marked polycythemia and elevated serum erythropoietin levels.
    • Histopathology confirmed solitary, benign-appearing renal interstitial cell tumors.
    • Following surgical removal of the affected kidney, both dogs experienced normalization of erythropoietin levels and polycythemia.

    Conclusions:

    • Renal interstitial cell tumors (RICT) can be a cause of erythropoietin-mediated polycythemia in dogs.
    • Surgical management of RICT can lead to resolution of polycythemia.
    • This study highlights a novel association between RICT and polycythemia in veterinary oncology.