MAGNETIC RESONANCE IMAGING OF A CHOROID PLEXUS CARCINOMA AND MENINGEAL CARCINOMATOSIS IN A DOG

Authors


  • The authors would like to acknowledge Dr. Shariar Salamat and Dr. Jim Cooley for their invaluable assistance with the neuropathological interpretation.

Address correspondence and reprint requests to David Lipsitz, Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin, 2015 Linden Drive West, Madison WI 53706.

Abstract

A 6-year-old neutered female Boston Terrier had a slow onset of blindness and behavior changes. Neurologic abnormalities included bilateral visual loss with absent menace responses and visual tracking, mydriatic pupils, slow pupillary light responses and papilledema. On magnetic resonance imaging (MRI) there were multiple cyst-like structures found in the parenchyma of the cerebrum, cerebellum and brainstem. Histopathologically the diagnosis was a choroid plexus carcinoma with meningeal carcinomatosis. The findings differ from previous descriptions of the MRI characteristics of choroids plexus tumors.

Ancillary