A young, adult basset hound presents to you for evaluation of chronic recurrent ear pruritus and a strong "musty" odor. Which of these diagnostic tests would be most useful initially? This is Answer A from the quiz.
Incorrect. While the odor may lead one to think that an anaerobic organism is the underlying cause, this is unlikely. Moreover, the exudate is not purulent.
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Acknowledgement: The author wishes to thank Ross Bond, DVM, BVMS, PhD, DVD, MRCVS, DECVD, for the use of the photo in this quiz and for his technical guidance.