Divergent ependymal tumor (ependymoblastoma/anaplastic ependymoma) of the posterior fossa: an uncommon case observed in a child.
We report a divergent ependymal tumor of the posterior fossa (ependymoblastoma/anaplastic ependymoma) observed in an 8-year-old boy. The tumor showed the histological pattern typical of an ependymoblastoma (tubular-papillary fetaloid architecture with stratification of the tumor cells) next to areas in which findings typical of an anaplastic ependymoma were detected. The immunohistochemical study confirmed our diagnostic suspicion, allowing us to establish a differential diagnosis with other entities such as medulloblastoma, medulloepithelioma, atypical rhabdoid/teratoid tumor, or metastases.
Ortiz
Javier
J
Department of Pathology, Hospital Universitario de Salamanca, Salamanca, Spain. jortiz@usal.es
Otero
Alvaro
A
Bengoechea
Oscar
O
Gonçalves
Jesús
J
Sousa
Pablo
P
Figols
Javier
J
Bullón
Agustín
A
D000367:Age Factors; D017668:Age of Onset; D014408:Biomarkers, Tumor / Q000032:analysis / Q000378:metabolism; D001933:Brain Stem / Q000473:pathology / Q000503:physiopathology; D002531:Cerebellum / Q000473:pathology / Q000503:physiopathology; D002551:Cerebral Ventricle Neoplasms / Q000473:pathology* / Q000503:physiopathology; D002648:Child; D003937:Diagnosis, Differential; D004806:Ependymoma / Q000473:pathology* / Q000503:physiopathology; D005260:Female; D020546:Fourth Ventricle / Q000473:pathology* / Q000503:physiopathology; D006261:Headache / Q000209:etiology; D006801:Humans; D015192:Infratentorial Neoplasms / Q000473:pathology* / Q000503:physiopathology; D008279:Magnetic Resonance Imaging; D008527:Medulloblastoma / Q000175:diagnosis; D019635:Neurosurgical Procedures; D016896:Treatment Outcome; D014839:Vomiting / Q000209:etiology
D014408:Biomarkers, Tumor