Related Experiment Video
Updated: Jun 22, 2026

08:47
Endoscopic Cholesteatoma Surgery
Published on: January 19, 2022
Auricular chondrosis in a horse
1Mt Martha, Victoria, Australia. josuron@satlink.com.au
Australian Veterinary Journal
|June 4, 2009
Summary
A rare condition called auricular chondrosis caused nodular lesions on a pony's ears. This diagnosis, previously unrecorded in horses, highlights a new potential veterinary concern.
Area of Science:
- Veterinary Pathology
- Comparative Pathology
Background:
- Equine dermatology often presents unique challenges.
- Auricular chondrosis is a known condition in other species.
Observation:
- A 4-year-old Welsh Mountain Pony gelding presented with multiple, raised, nodular lesions on the medial aspects of both ears.
- Lesions measured 3-8 mm in diameter and developed over several months without epidermal involvement.
Findings:
- Histopathological examination of punch biopsies confirmed a diagnosis of auricular chondrosis.
- This condition has not been previously reported in horses.
Implications:
- This case report introduces auricular chondrosis as a potential diagnosis in equine ear conditions.
- Further research is warranted to understand the prevalence and pathogenesis of this condition in horses.
More Related Videos
Related Concept Videos
The Auditory Ossicles
The auditory ossicles of the middle ear transmit sounds from the air as vibrations to the fluid-filled cochlea. The auditory ossicles consist of two malleus (hammer) bones, two incus (anvil) bones, and two stapes (stirrups), one on each side. These bones develop during the fetal stage and are the ones to ossify first. They are fully mature at birth and do not grow afterward.
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
The aptly named stapes look very much like a stirrup. The three ossicles are unique to mammals, and each plays a role in...
Anatomy of the Ear
Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...

