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Compendium December 2006 (Vol 28, No 12)

Letters — Questionable Differentials

by Stanley Marks, BVSc, PhD, DACVN, DACVIM, Dottie P. Laflamme, DVM, PhD, DACVN, Denise McAloose

    I question the diagnostic differentials for Clinical Snapshot #1 (September 2006, p 615). Although plantigrade stance could indeed be a sign of lower motor neuron disease, it could also be due to muscle weakness (unfortunately, the head and neck are not visible to check for subtle ventroflexion). I would certainly have included causes of muscle weakness, and hypokalemic chronic renal failure would have been near the top of my differentials for this case, along with weight loss, polyuria/polydipsia, and a gait and stance consistent with generalized muscle weakness. That's quite a list of "zebras," but I still expect horses when I hear pounding hooves.

    Kate Roby, VMD
    Via email

    You're right. Thanks for the feedback. I'm glad to know you're reading Compendium!

    Douglass K. Macintire, DVM, MS, DACVIM, DACVECC
    Editor in Chief, Compendium

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