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Plexiform Vasculopathy in Feline Cervical Lymph Nodes.

Nicole Jungwirth1,2, Johannes Junginger1, Christoph Andrijczuk3

  • 11 Department of Pathology, University of Veterinary Medicine Hannover, Hannover, Germany.

Veterinary Pathology
|January 19, 2018
PubMed
Summary

Plexiform vasculopathy in cats is an unknown endothelial disorder. This study suggests a lymphendothelial origin for these vascular neoplasms in feline lymph nodes.

Keywords:
Prox-1catimmunohistochemistrylymphendotheliumplexiform vasculopathy

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Area of Science:

  • Veterinary Pathology
  • Oncology
  • Immunohistochemistry

Background:

  • Plexiform vasculopathy is an endothelial proliferative disorder affecting feline lymph nodes.
  • The etiology and cell origin of this condition remain undetermined.
  • This study investigates four cats presenting with masses near the thyroid gland and enlarged lymph nodes.

Observation:

  • Affected lymph nodes exhibited significant lymphoid tissue loss and erythrocyte accumulation.
  • Histological examination revealed capillary networks with differentiated endothelial cells in a collagen-rich stroma.
  • These features were consistent with benign plexiform vasculopathy.

Findings:

  • Immunohistochemistry confirmed expression of vascular endothelial markers CD31 and factor VIII-related antigen.
  • Prox-1 antibody immunolabeling strongly indicated a lymphendothelial origin for the proliferating cells.
  • The observed vascular proliferation originated from lymphatic endothelium.

Implications:

  • The findings suggest that intranodal vascular neoplasms in cats may arise from lymphatic endothelium.
  • This research contributes to understanding the pathogenesis of plexiform vasculopathy.
  • Consideration of a lymphendothelial origin is crucial for diagnosing and managing feline intranodal vascular neoplasms.