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Related Experiment Video

Updated: Nov 29, 2025

Efficient Isolation Protocol for B and T Lymphocytes from Human Palatine Tonsils
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Canine Tonsillar Polyps: Characteristics, Classification, and Review of the Pathogenesis.

Jéssica Molín1, Miquel Vilafranca2, Alejandro Suárez-Bonnet3

  • 116739University of Lleida, Lleida, Spain.

Veterinary Pathology
|November 18, 2020
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Canine tonsillar polyps are uncommon benign growths. This study classifies these polyps based on their histological stromal components, proposing a new morphological diagnosis approach.

Keywords:
doghamartomaoropharynxpathogenesispolypreviewtonsil

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Area of Science:

  • Veterinary Pathology
  • Canine Oncology

Background:

  • Canine tonsillar polyps are rare and their pathogenesis is not well understood.
  • Existing classifications may not accurately reflect the histological nature of these lesions.

Purpose of the Study:

  • To describe the clinical and histological features of canine tonsillar polyps.
  • To review and propose a revised classification system for canine tonsillar polyps.
  • To investigate the pathogenesis and treatment of canine tonsillar polyps.

Main Methods:

  • Retrospective case series of 14 canine tonsillar polyps.
  • Clinical data collection including signalment, lesion characteristics, and treatment outcomes.
  • Histopathological examination to determine stromal components and categorize polyps.
  • Review of existing literature on tonsillar polyp classification and pathogenesis.

Main Results:

  • Fourteen canine tonsillar polyps were identified in adult dogs (3-13 years), with a female predilection (10/14).
  • Most lesions were asymptomatic (10/14), unilateral, and either pedunculated (9/14) or sessile (5/14).
  • Histologically, polyps showed benign proliferation of lymphatic vessels, blood vessels, fibrous tissue, and lymphoid tissue, leading to categories like lymphangiomatous, angiofibromatous, and lymphoid.

Conclusions:

  • The study proposes a morphological diagnosis based on stromal characteristics, suggesting a move away from the term 'inflammatory tonsillar polyp'.
  • Surgical excision was curative in cases with follow-up.
  • Further research into the pathogenesis of canine tonsillar polyps is warranted.