Peer-reviewed veterinary case report
Meningoencephalomyelitis of unknown cause in cats with brain
By J. Nessler et al.·Published in Frontiers in Veterinary Science·2020·View original on Semantic Scholar →
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Original publication title: Meningoencephalomyelitis of Unknown Origin in Cats: A Case Series Describing Clinical and Pathological Findings
- Species:
- cat
Plain-English summary
Four cats, aged between 1.7 and 17.8 years, were brought in for various neurological symptoms, including confusion and weakness. They also showed signs like fever, weight loss, and decreased appetite. Tests like MRI revealed brain and spinal cord lesions, while cerebrospinal fluid tests showed some abnormalities. A detailed examination of their brain tissue confirmed inflammation, but tests for common infections came back negative. Unfortunately, the exact cause of their condition remains unknown, but the cats received supportive care and monitoring.
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Abstract
Meningoencephalomyelitis of unknown origin (MUO) is an umbrella term describing inflammatory changes of the central nervous system (CNS) with suspected non-infectious etiology. Diagnosis of MUO mostly remains presumed in a clinical setting. Histopathological and immunohistochemical examination of CNS tissue represent additional tools for detection of inflammation and the exclusion of specific infectious agents. While MUO is well-described in canine patients, only little is known about MUO in cats. Previous reports of feline MUO involve either clinical findings or histopathological examination but not both. The present case series is the first report describing both clinical and histopathological findings of feline MUO: Four cats (age: 1.7–17.8 years) showed acute to chronic progressive neurological signs of encephalopathy or myelopathy. Three cats had extraneural signs (hyperthermia, weight loss, hyporexia, leukocytosis). Magnetic resonance imaging (MRI) showed multifocal intraparenchymal lesions in forebrain, brainstem or spinal cord with homogenous contrast enhancement (2/2). Cerebrospinal fluid (CSF) examination was normal or displayed albuminocytologic dissociation. Histopathology revealed a multifocal, lympho-histiocytic meningoencephalitis in three cases and a lympho-histiocytic myelitis in one case. Immunohistochemistry for feline parvovirus, feline coronavirus, feline herpesvirus, tick borne encephalitis virus, Borna disease virus, morbillivirus, rabies virus, suid herpesvirus-1, and Toxoplasma gondii were negative in all cases. One Sentence Summary This case series is the first one reporting both clinical and histopathological findings in cats with MUO. Feline MUO incorporates heterogeneous subtypes of sterile CNS inflammation.
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Search related cases →Original publication on Semantic Scholar: https://www.semanticscholar.org/paper/32671104