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Ear cytology sample from a canine patient with chronic otitis externa, graded as a 4. Numerous cocci are present in pairs, with fewer numbers of rod bacteria (red arrows) and Malassezia pachydermatis organisms (black arrow).
Ear cytology, with Diff-Quik staining, is an effective and quick in-house option to confirm and quantify any type of infection and degree of inflammation and should be performed for all dogs with otitis externa.
Otitis externa is inflammation of the external ear canal and is a common problem in dogs and cats. Signs can include head shaking, pain, malodor, erythema, erosion, ulceration, swelling, and/or ceruminous gland inflammation. Diagnosis is based on otoscopic examination, cytology, and culture. Treatment depends on the specific diagnosis.
Pathologic cycle for chronic otitis externa. Primary Causes. Primary disorders initiate the inflammatory process within the ear canal and alter the aural environment, allowing secondary complicating factors, such as infections, to develop.
6 Αυγ 2020 · Summary. Ear cytology is a noninvasive, effective tool used to diagnose and monitor conditions of the external ear canal and pinnae. Cytology samples from the external ear canal are evaluated for the presence of mites and the presence and numbers of yeast, bacteria, and leukocytes.
Ear canal cytology. Cytology Cytologic examination of ear canal discharge provides a brief overview of the aural environment, providing a foundation for therapeutic decisions and advanced diagnostics. 1,2 It is also the primary tool in identifying bacterial or yeast overgrowth.
At this stage a cytology test can be performed to indicate infection type. Identification of an underlying cause of infection is vital, especially where the otitis is recurrent or chronic. “Ear cytology is a quick and easy diagnosis and management tool,” Mr Williams adds.
