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Updated: Jul 9, 2026

Operating Procedures of the Electrochemotherapy for Treatment of Tumor in Dogs and Cats
06:32

Operating Procedures of the Electrochemotherapy for Treatment of Tumor in Dogs and Cats

Published on: October 24, 2016

Hemangiosarcoma in cats: 53 cases (1992-2002).

Chad M Johannes1, Carolyn J Henry, Susan E Turnquist

  • 1Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, University of Missouri, Columbia, MO 65211, USA.

Journal of the American Veterinary Medical Association
|December 18, 2007
PubMed
Summary
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This study analyzed feline hemangiosarcoma, finding subcutaneous tumors more aggressive than cutaneous ones. Higher mitotic counts indicated poorer prognosis for cats with this cancer.

Area of Science:

  • Veterinary oncology
  • Comparative pathology

Background:

  • Feline hemangiosarcoma is a challenging diagnosis.
  • Understanding its biological behavior is crucial for treatment and prognosis.

Purpose of the Study:

  • To characterize the biological behavior of feline hemangiosarcoma.
  • To identify prognostic factors influencing survival outcomes.

Main Methods:

  • Retrospective case series of 53 cats diagnosed with hemangiosarcoma.
  • Data collected from diagnostic laboratories, veterinary colleges, and private practices.
  • Analysis included tumor location, treatment, surgical margins, recurrence, metastasis, and mitotic counts.

Main Results:

  • Cutaneous and subcutaneous hemangiosarcoma were most common.

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Last Updated: Jul 9, 2026

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  • Clear surgical margins correlated with longer survival.
  • Subcutaneous tumors showed higher local recurrence rates and aggressiveness.
  • Visceral hemangiosarcoma had a grave prognosis, often diagnosed at necropsy.
  • Higher mitotic counts (>3/10 HPF) were linked to shorter survival.

    • Conclusions:

    • Subcutaneous hemangiosarcoma is more aggressive than cutaneous.
    • Metastatic potential may be underestimated for cutaneous and subcutaneous forms.
    • Visceral hemangiosarcoma carries a poor prognosis, emphasizing the need for early detection and aggressive management.