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A tough, fibrous membrane, the tunica albuginea, covers the testes, extending inward to form fibrous partitions or septa, dividing them into internal compartments called lobules. Each lobule has 1 to 3 tightly coiled seminiferous tubules where sperm production occurs. These tubules merge into a tubular network at the back of the testis, known as the rete testis. It connects to 15 to 20 efferent ductules, leading to the epididymis.
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Methods for Evaluating Testicular Function in Domestic Cats.

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Summary
This summary is machine-generated.

This study details cat testicle sonomorphology and volume, finding ultrasound measurements correlate with testosterone levels and testicular size. Histology confirmed spermatogenesis in all cats, providing key data for andrological examinations.

Keywords:
felinehistologysonomorphologytesticletesticular volume

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Area of Science:

  • Veterinary Medicine
  • Reproductive Biology
  • Diagnostic Imaging

Background:

  • Accurate assessment of testicular size and volume is crucial for andrological evaluations in male cats.
  • Existing methods for measuring feline testicles may have limitations in precision and comparability.
  • Understanding testicular sonomorphology aids in interpreting diagnostic imaging findings.

Purpose of the Study:

  • To describe the physiological sonomorphology of the cat testicle.
  • To compare two methods (sonography and Podany testimeter) for testicular volume calculation.
  • To correlate testicular volume and sonomorphology with histological findings and testosterone levels.

Main Methods:

  • Clinical examination, sonography, and Podany testimeter measurements were performed on 39 male cats.
  • Testicular tissue was analyzed histologically to confirm spermatogenesis.
  • Serum testosterone concentrations were measured and correlated with testicular parameters.

Main Results:

  • Cat testicles exhibit a characteristic homogeneous parenchyma with an echogenic mediastinum on sonography.
  • Histological examination confirmed active spermatogenesis in all cats.
  • Significant positive correlations were found between testicular volume (measured by sonography and Podany testimeter) and serum testosterone levels.
  • Sonographic measurements yielded significantly higher testicular volumes compared to the Podany testimeter.

Conclusions:

  • Sonography provides reliable data for evaluating cat testicle size and volume, correlating positively with testosterone levels.
  • The study establishes reference sonomorphological values for feline testicles, valuable for andrological examinations.
  • Ultrasound is a superior method for determining testicular volume in cats compared to the Podany testimeter.