Related Experiment Video
Updated: Jun 13, 2025

08:48
Identification of Neutrophil Extracellular Traps in Paraffin-Embedded Feline Arterial Thrombi using Immunofluorescence Microscopy
Published on: March 29, 2020
8.5K
Histopathological changes in testicular lesions in cats
Fraser I Hill1, May Py Tse2, Steve W Mills1
1City U Veterinary Diagnostic Laboratory, City University of Hong Kong, Hong Kong SAR, China.
Journal of Feline Medicine and Surgery
|September 17, 2024
Summary
Non-neoplastic testicular lesions like inflammation and cryptorchidism were most common in cats. Rare tumors, including leiomyoma and fibrosarcoma, were also identified in this feline pathology study.
Area of Science:
- Veterinary Pathology
- Feline Medicine
- Oncology
Background:
- Testicular lesions in cats can be neoplastic or non-neoplastic.
- Histopathological examination is crucial for diagnosing these conditions.
Purpose of the Study:
- To describe neoplastic and non-neoplastic lesions in cat testes.
- To identify the prevalence and types of testicular lesions in cats in Hong Kong.
Main Methods:
- Retrospective study of 26 feline testicular samples from 18 cats (2018-2024).
- Review of laboratory records including signalment and histopathological findings.
- Immunohistochemical staining and bacterial identification were performed where applicable.
Main Results:
- Non-neoplastic lesions (18 cases) were more common than neoplastic lesions (3 cases).
- Common non-neoplastic findings included inflammation, cryptorchidism, polyorchidism, and epididymal cysts.
- Identified neoplastic lesions were Sertoli cell tumor, leiomyoma, and fibrosarcoma.
Conclusions:
- Non-neoplastic conditions are the most frequent testicular abnormalities in cats.
- Leiomyoma and fibrosarcoma are rare testicular tumors in cats and should be considered in differential diagnoses.

