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Hemifacial spasm associated with an intracranial mass in two dogs
Author(s) -
Van Meervenne S. A. E.,
Bhatti S. F. M.,
Martlé V.,
Van Soens I.,
Bosmans T.,
Gielen I.,
Van Ham L. M. L.
Publication year - 2008
Publication title -
journal of small animal practice
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.7
H-Index - 67
eISSN - 1748-5827
pISSN - 0022-4510
DOI - 10.1111/j.1748-5827.2008.00565.x
Subject(s) - medicine , hemifacial spasm , medulla oblongata , facial muscles , lesion , anatomy , facial nerve , surgery , central nervous system
Two dogs were presented with hemifacial spasm. Computed tomography images of both the dogs revealed an intracranial mass. In the first dog, a lesion at the level of the medulla oblongata was thought to cause primary irritation of the facial nucleus, with consequently permanent contraction of the ipsilateral facial muscles. In the second dog, a mass seemingly arising from the middle cranial fossa presumably isolated the facial motor neurons from upper motor neuron control, which resulted in hemifacial spasm as a result of loss of inhibitory interneuronal activity.