Objective: To evaluate the value of Gallium-67 single-photon emission computed tomography/computed tomography in the diagnosis and monitoring treatment response of malignant otitis externa. Methods: Eight patients underwent 12 Gallium-67 single-photon emission computed tomography/computed tomography scintigraphy for eight suspected malignant otitis externa and were subsequently subjected to vis...

The term otitis externa does not refer to a specific disease process but literally to an inflammation of the external ear canal. The prevalence in the dog has been reported to be between 10 and 20 percent, although in more tropical climates the prevalence is 50% or more. The incidence in the cat is less and reported to be approximately 2 to 10 percent. Otitis externa has multiple causes includi...

Isolates of Pseudomonas aeruginosa (167) were obtained from 528 samples of canine otitis externa, identified by biochemical reactions and tested for susceptibility to 10 antimicrobials. The most effective drug was ciprofloxacin. The study reports alarming resistance among P. aeruginosa isolated from canine otitis externa samples in Rio de Janeiro, Brazil.

Retro-auricular cellulitis associated with otitis externa is now the great mimicker of mastoiditis. It may be the most common cause of this specific cellulitis/auricular protrusion when it is associated with otitis externa. This column presents six cases of children who presented with peri-auricular redness, four of whom had protuberant ear and retro-auricular cellulitis.

Thirty-one ears (16 dogs) with otitis externa originating from bacterial or yeast infections were enrolled in a study to evaluate the in vivo efficacy of an ear cleanser containing 2.5% lactic acid and 0.1% salicylic acid for the treatment of infectious otitis externa. The affected ears were treated with the ear cleanser twice daily for 2 weeks and evaluated after 1 and 2 weeks of treatment. Th...

Otitis externa is a common condition of the ear. It is manifested as narrowing of the lumen owing to the edematous swelling of the ear canal lining. Perichondritis may occur independently or as a complication of the otitis externa. We report a case of perichondritis after using a topical ear drop. Changing the medication provides immediate resolution of the condition.

Necrotizing otitis externa (NOE), also called malignant otitis externa, corresponds to osteomyelitis of the skull base [1]. NOE occurs primarily in diabetic elderly patients with a male preponderance [2]. Typically due to pseudomonas aeruginosa, NOE begins as a soft tissue infection of the external auditory canal (EAC) and spreads via the fissures of Santorini and the tympanomastoid suture to i...

Introduction: Cerumen is known as ear wax, produced regularly by cerumen and lipid secretary glands. Regarding the effect of Mazandaran province's humid weather on the prevalence of pathogenic microorganisms, this study was performed to determine the bacterial flora of the ear in patients with acute otitis externa and its comparison with healthy subjects. Materials and Methods: In this case-...

background and objective: otitis externa is a common condition affecting the external auditory canal. predisposing factors implicated in the pathogenesis of the condition include preexisting aural disease, genetic factors, infection, trauma, and climatic conditions. bacteria are the most common cause of infection and fungi play a smaller but significant role in the disease. otomycosis is charac...

INTRODUCTION Malassezia species are commensals of normal skin microbial flora of humans and animals. These may become pathogenic under certain conditions such as those associated with atopic dermatitis or otitis externa in dogs. MATERIAL AND METHODS Isolates of Malassezia pachydermatis were obtained from 27 dogs with healthy external ears and 32 dogs with otitis externa. Isolates were charact...