Page 103 - Current techniques in canine and feline neurosurgery_2017_Neat

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Figure 10.5 A 9‐year‐old female Hungarian Vizla dog. The dog was referred after a generalized seizure was recorded 24 hours previously. The histopathol­
ogy results after surgical removal were consistent with a meningioma, atypical type. (A) Dorsal T1‐weighted postgadolinium MRI of the brain. There is
evidence of a mass affecting the right olfactory and frontal lobe causing a marked midline shift to the left. This mass shows heterogeneous contrast enhance­
ment. (B) Transverse T1‐weighted postgadolinium MRI of the brain at the level of the frontal lobe. There is heterogeneous contrast enhancement of the mass
located on the right frontal lobe. There is a mass effect.

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Figure 10.6 A 12‐year‐old female German Shepherd dog presented for intermittent behavioral changes and a generalized seizure 2 months before referral.
The histopathology results (C) after surgical removal were consistent with a meningioma, fibroblastic microcystic subtype. (A) Sagittal T2‐weighted MRI of
the brain. There is evidence of a hyperintense well‐defined mass affecting the frontal lobe. There is perilesional edema. (B) Transverse T1‐weighted post­
gadolinium MRI of the brain at the level of the frontal lobe. There is evidence of a mass effect affecting the right frontal lobe causing a midline shift to the
left. This mass shows heterogeneous contrast enhancement. There is a dural tail sign associated with the longitudinal fissure. (C) Spindle cells with elongated
nuclei haphazardly arranged in small bundles. H&E staining, ×20. Source: (C) Courtesy of Dr. Jim Cooley.