Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/45723
Título: Choroid Plexus Cyst in a Neonatal Burmeister's Porpoise (Phocoena spinipinnis)
Autores/as: Diaz Delgado, Josue
Groch, K. R.
Wiegand, M. W.
Secchi, E. R.
Réssio, R.
Natália, F. C.C.
Catão-Dias, J. L.
Clasificación UNESCO: 310907 Patología
Palabras clave: Central nervous system
Cetacean pathology
Congenital anomaly
Neuroectoderm
Fecha de publicación: 2017
Editor/a: 0021-9975
Publicación seriada: Journal of Comparative Pathology 
Resumen: Neuroectodermal developmental anomalies are reported rarely in cetaceans and central nervous system cysts are not described. We describe the gross, microscopical, histochemical and immunohistochemical features of a neuraxial myelencephalic cyst in a stranded neonatal Burmeister's porpoise (Phocoena spinipinnis). Grossly, a subdural, extra-axial, well-demarcated, yellow fluid-filled cystic structure (1.9 × 1.6 × 1 cm) expanded the left foramen of Luschka, the left caudolateral cerebellar recess and the left cranioventral myelencephalon. The cyst displaced the ipsilateral ventral paraflocculus and distended the underlying cranial nerves IX, X, XI and XII. Microscopically, the cystic structure was lined by a monolayer of low cuboidal to flattened epithelium supported by a thin fibrovascular matrix. Immunohistochemistry (IHC) revealed strong and diffuse expression of AE1/AE3 and focal positivity for vimentin. IHC for epithelial membrane antigen, glial fibrillary acid protein, synaptophysin and S100 was negative. Based on these findings, an extra-axial cyst of the choroid plexus of the fourth ventricle (CCPFV) was diagnosed. The pathological relevance of the CCPFV in this case is uncertain. The cause of death involved severe perinatal interspecific (shark) trauma. The present case provides the first evidence of a neuroepithelial cyst in cetacean species.
URI: http://hdl.handle.net/10553/45723
ISSN: 0021-9975
DOI: 10.1016/j.jcpa.2017.05.005
Fuente: Journal of Comparative Pathology [ISSN 0021-9975], v. 157 (1), p. 51-56
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