Evaluation of intracranial meningioma resection with a surgical aspirator in dogs: 17 Cases (1996-2004)

Department of Surgery, The Animal Medical Center, 510 E 62nd St, New York, NY 10021, USA.
Journal of the American Veterinary Medical Association (Impact Factor: 1.56). 08/2006; 229(3):394-400. DOI: 10.2460/javma.229.3.394
Source: PubMed


To determine results of intracranial meningioma resection by use of a surgical aspirator and assess prognostic factors associated with intracranial meningiomas in dogs.
Retrospective case series.
17 dogs.
Medical records of dogs that underwent resection of an intracranial meningioma by use of a surgical aspirator were reviewed. Information pertaining to signalment, imaging findings, clinical signs, duration of clinical signs, preoperative treatment, location of the tumor, results of histologic assessment, outcome, and necropsy results was obtained from the medical record. Clients and referring veterinarians were contacted via telephone for information on recurrence of clinical signs and postoperative survival time.
16 dogs were > 7 years of age, and all 17 dogs had seizures before surgery. The most commonly affected breed was the Golden Retriever, represented by 6 of the 17 dogs. Median survival time was 1,254 days. Of the data collected, only histologic subtype of the tumor was prognostic. Analysis of survival times according to histologic tumor subtypes indicated that the order from most brief to longest was as follows: anaplastic, 0 days; fibroblastic, 10 days; psammomatous, > 313 days; meningothelial, > 523 days; and transitional, 1,254 days.
Use of a surgical aspirator to resect intracranial meningiomas in dogs was associated with longer survival times than those achieved with traditional surgery alone or traditional surgery combined with radiation therapy. Dogs with meningothelial, psammomatous, or transitional intracranial meningioma subtypes appeared to have a better prognosis than dogs with other subtypes of meningioma.

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    • "MRI was able to show the exact location of the tumor before the resection. Performing microsurgery under a surgical microscope was also helpful to obtain good results for canine meningioma, which generally has poorly defined tumor margins [4]. These techniques minimized the trauma to the subarachnoid tissue. "
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