title: Melanotic ependymoma in a Goeldi's marmoset (Callimico goeldii).
abstract: A spontaneous melanotic ependymoma was observed in the brain of an adult female Goeldi's marmoset (Callimico goeldii). The mass completely occupied the left lateral ventricle, rupturing the fornix and corpus callosum, and compressing the adjacent neuropil. Special histochemical techniques, including melanin bleach, periodic acid-Schiff, Perls iron and phosphotungstic acid hematoxylin, demonstrated the neoplasms to be an ependymoma with a rare melanotic differentiation.
authors.affiliation: Department of Pathology, National Zoological Park, Smithsonian Institution, Washington, DC 20008-2598, USA.
authors.forename: D K
authors.initials: DK
authors.lastname: Nichols
authors.forename: J L
authors.initials: JL
authors.lastname: Dias
mesh_terms: D000818:Animals; D001932:Brain Neoplasms / Q000473:pathology / Q000662:veterinary*; D002144:Callithrix; D002454:Cell Differentiation; D002552:Cerebral Ventricles; D004396:Coloring Agents; D003337:Corpus Callosum; D004806:Ependymoma / Q000473:pathology / Q000662:veterinary*; D005260:Female; D008545:Melanoma / Q000473:pathology / Q000662:veterinary*; D018419:Primate Diseases
chemical_list: D004396:Coloring Agents