Günther C, Beckmann KM, Steffen F. Formation of a meningoencephalocele after removal of a frontal lobe meningioma by transfrontal craniotomy in a cat.
JFMS Open Rep 2020;
6:2055116920957195. [PMID:
32983552 PMCID:
PMC7498976 DOI:
10.1177/2055116920957195]
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Abstract
Case summary
A 10-year-old castrated male domestic shorthair cat was referred
for surgical treatment of a left-sided frontal lobe meningioma
diagnosed by CT. Clinically, the cat had generalised
tonic–clonic seizures, which reduced in frequency after
treatment was started with prednisolone. After definition of the
anatomical landmarks of the feline skull, a bilateral
transfrontal craniotomy allowed en bloc removal of the
meningioma. While postoperative recovery was uneventful,
right-sided proprioceptive deficits were still present 6 months
after surgery. MRI detected a probable meningoencephalocele
herniating through the surgical bone defect in the frontal
sinus. Because of the mild neurological deficits and good
quality of life, the meningoencephalocele was not treated.
Thirty-one months after meningioma removal the cat was alive
without further neurological progression.
Relevance and novel information
To our knowledge, this is the first report to describe, in detail,
the technique of transfrontal craniotomy in cats. Iatrogenic
meningoencephalocele is a complication that has not previously
been described after meningioma removal in cats, and should be
considered as a potential complication after craniotomy.
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