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PROBABLE TRIGEMINAL NERVE SCHWANNOMA IN A DOG 总被引:1,自引:0,他引:1
J.H. Saunders DVM L. Poncelet DVM DScV C. Clercx DVM PHD F.R. Snaps DVM DScV P. Flandroy MD P. Capasso MD R.F. Dondelinger MD 《Veterinary radiology & ultrasound》1998,39(6):539-542
A 7-year-old male Husky dog developed atrophy of the right masseter muscle and pruritis of the right side of the face. A myogenic origin was excluded using muscular biopsy. Electrophysiologically, there was involvement of the motor and sensory fibers of the trigeminal nerve, suggesting a lesion located between the brainstem and the trigeminal ganglion. On MRI examination, a nodular mass was detected in the right caudal fossa. This mass was characterized by intense enhancement after injection of contrast medium. Because of the progressive clinical signs, electrophysiology, and MRI results, a presumptive diagnosis of a trigeminal nerve schwannoma was made. The animal's condition improved slightly with corticosteroids. The dog underwent euthanasia 3 months after initial presentation. Necropsy was not performed. 相似文献
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Frédéric R. Snaps DVM DScV CERTVR Jimmy H. Saunders DVM CERTVR Richard D. ParkDMV PHD Bénédicte DaenenMD Marc H. BalligandDVM DScV CSAO Robert F. DondelingerMD 《Veterinary radiology & ultrasound》1998,39(6):518-523
Two comparison studies were performed. In the first conventional spin-echo (T1- and T2-weighted) sequences and a three-dimensional (3-D Fourier transform [3DFT]) echo gradient fast-imaging sequence were compared for imaging the canine normal elbow joint. In all three sequences, there was an isointense signal of the articular cartilage and a hyposignal of the subchondral bone, as compared with the muscles. The medial coronoid process of the ulna was clearly seen on the dorsal plane images, it appeared with a homogenous low-intensity signal. Its articulation with the radius was clearly outlined. In a second study, the 3DFT echo gradient fast-imaging sequence was compared to a fat saturation sequence on normal shoulder and elbow joints. Elbows were imaged with and without injection of saline, in an attmept to show the opposing cartilaginous articular surfaces. This distinction was possible in the shoulder joint but not in the elbow because of insufficient spatial resolution. On the three MRI sequences compared, gradient echo fast imaging with steady-state precession (GE FISP) sequence was found to be the most suitable for imaging the canine elbow joint. 相似文献
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