We describe an epithelial neoplasm arising from the fourth ventricle of a goat and extending into the subjacent cerebellum along the spaces of Virchow-Robin. The neoplastic cells are consistent with squamous epithelium based upon light microscopic morphology and cytokeratin immunoreactivity. The lack of overt keratin formation and the lack of an exophytic component distinguishes this neoplasm from intracranial epidermoid cysts, resulting in the classification of this caprine tumor as an epithelioma.
IiharaKKikuchiHIshikawaMNagasawaS:
Epidermoid cyst traversing the pons into the fourth ventricle. Case report.
Surg Neurol32:
377–381,
1989.
3.
KornegayJNGorgaczEJ:
Intracranial epidermal cysts in three dogs.
Vet Pathol19:
646–650,
1982.
4.
LepoireJPertuisetB:Les kystes épidermoides cranioencéphaliques,
p. 106.
Masson & Cie,
Paris, France,
1957.
5.
LindenbergR:
Über ein Plexusepitheliom des 3. Ventrikels mit geschichtetem Plattenepithel und einer Auskleidung der Ventrikelwand mit dem gleichen Epithel. Zentralbl Allg Pathol Anat
88:
47–51,
1952.
6.
NeiberleKCohrsP:Lehrbuch der Speziellen pathologischen Anatomie der Haustiere,
4th ed.Gustav Fischer Verlag,
Jena, Germany,
1961.
7.
NobelTANyskaAPirakMSkolnikMMeshorerA:
Epidermoid cysts in the central nervous system of mice.
J Comp Pathol97:
357–359,
1987.
8.
ObanaWGWilsonCB:
Epidermoid cysts of the brain stem. Report of three cases.
J Neurosurg74:
123–128,
1991.
9.
RubensteinLJ:Tumors of the Central Nervous System,
pp. 228–292.
Armed Forces Institute of Pathology,
Washington, DC,
1972.
10.
UlrichJ:
Intracranial epidermoids, a study on their distribution and spread.
J Neurosurg21:
1051–1058,
1964.
11.
WeaverENCoulonRA:
Excision of a brain-stem epidermoid cyst. Case report.
J Neurosurg51:
245–257,
1979.
12.
WongSWDuckerTBPowersJM:
Fulminating para-pontine epidermoid carcinoma in a four-year-old boy.
Cancer37:
1525–1531,
1976.
13.
ZimmermanHM:
Tumours in the central and peripheral nervous system. In:
Pathology of Tumours in Laboratory Animals,
ed. TurusovVS,
pp. 629–654.
World Health Organization,
IARC Scientific Publication no. 25,
Lyon, France,
1979.
