Welcome to the all-new Vetlearn

  • Vetlearn is getting a new home. Starting this fall,
    Vetlearn becomes part of the NAVC VetFolio family.

    You'll have access to the entire Compendium and
    Veterinary Technician archives and get to explore
    even more ways to learn and earn CE by becoming
    a VetFolio subscriber. Subscriber benefits:
  • Over 500 hours of interactive CE Videos
  • An engaging new Community for tough cases
    and networking
  • Three years of NAVC Conference Proceedings
  • All-new articles (CE and other topics) for the entire
    healthcare team

To access Vetlearn, you must first sign in or register.


  • Registration for new subscribers will open in September 2014!
  • Watch for additional exciting news coming soon!
Become a Member

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

    NEXT: Lymphoid Leukemia in Dogs
    Stay on top of all our latest content — sign up for the Vetlearn newsletters.
    • More