Summary
The stumptailed monkey (Macaca arctoïdes) was found to have, in and next to the area postrema, hypependymal cysts, which in one animal harbored a fungus belonging to the Phycomycetes. Invasion of the brain by such a fungus has not previously been described in primates. The predominantly non-septate hyphae were appended to mast cells, which occur in large number in the area postrema of this animal species. While arterial thrombosis with scattered hyphae and mast cells had developed in the tela of the third ventricle, the brain was free of necrosis or granulomatous reaction. Site of origin and predisposing factors were not disclosed.
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Cammermeyer, J. Phycomycetes and mast cells in hypependymal cysts of the area postrema inMacaca arctoïdes . Acta Neuropathol 23, 1–8 (1973). https://doi.org/10.1007/BF00688999
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DOI: https://doi.org/10.1007/BF00688999