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MAGNETIC RESONANCE IMAGING AND ULTRASONOGRAPHY IN THE DIAGNOSIS OF A MALIGNANT PERIPHERAL NERVE SHEATH TUMOR IN A DOG
Author(s) -
Platt Simon R.,
Graham John,
Chrisman Cheryl L.,
Collins Kathleen,
Chandra Sundeep,
Sirninger Jeffrey,
Newell Susan M.
Publication year - 1999
Publication title -
veterinary radiology and ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.541
H-Index - 60
eISSN - 1740-8261
pISSN - 1058-8183
DOI - 10.1111/j.1740-8261.1999.tb02128.x
Subject(s) - medicine , echogenicity , brachial plexus , magnetic resonance imaging , anatomy , lameness , peripheral , radiology , ultrasonography
A 9‐year‐old male neutered mixed breed dog had a two‐month history of progressive left thoracic limb lameness. There was electromyographic evidence of denervation potentials in all muscles of this limb. In magnetic resonance images a multilobulated, hyperintense mass was visible caudal to the mid‐diaphysis of the left humerus on T‐2 weighted images. The mass, which was isointense with surrounding tissue on T1 weighted images, extended proximally towards the brachial plexus. The mass was also visible as a fusiform structure of mixed echogenicity sonographically, although fine‐needle aspiration performed at this time was nondiagnostic. A malignant peripheral nerve sheath tumor was diagnosed histopathologically.