@entity521 is the third most common @entity5 of childhood, after @entity1778 and @entity1313 . Only 2% of all @entity521 occur in the brain. @entity17692 is an specific subset of @entity6196 ( @entity6196 ). Meduloblastoma is a relatively common and well-established entity, consisting of primitive and multipotential cells that may exhibit some evidence of neuroblastic or gliad differentiation. @entity76 with ultrastractural evidence of significant neuroblastic differentiation is extremely rare. We report a rare case of @entity521 in the cerebellum. A 2.5-year-old Iranian @entity1 presented with @entity391 and @entity2055 . CT scan showed a @entity5 mass in the cerebellum and the report of radiologist was @entity2946 . Light microscopic assay showed a small cell neoplasm with lobules of densely packed cells (lobulated pattern) and better differentiated cells. @entity3508 was positive. Pathologic diagnosis confirmed the existence of @entity76 . Chemotherapy followed surgical removal. No relapse occurred 12 months after surgery.

@entity76 in 2.5 years old XXXX .

@entity1 :: ('9606', 'Species') :: ['boy'] @entity6196 :: ('MESH:D018242', 'Disease') :: ['PNET', 'Primitive Neuroectodermal Tumors'] @entity1313 :: ('MESH:D001932', 'Disease') :: ['brain tumors'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'malignancy'] @entity391 :: ('MESH:D014839', 'Disease') :: ['vomiting'] @entity1778 :: ('MESH:D007938', 'Disease') :: ['leukemia'] @entity3508 :: ('2026', 'Gene') :: ['Neuron-Specific Enolase'] @entity76 :: ('MESH:D002526', 'Disease') :: ['cerebellar neuroblastoma', 'But cerebellar neuroblastoma'] @entity521 :: ('MESH:D009447', 'Disease') :: ['neuroblastoma', 'Neuroblastoma'] @entity17692 :: ('MESH:D002528', 'Disease') :: ['Primary cerebellar neuroblastoma'] @entity2946 :: ('MESH:D008527', 'Disease') :: ['medulloblastoma'] @entity2055 :: ('MESH:D001259', 'Disease') :: ['nausea in the morning and ataxia']
@entity1 :: (9606,Species) :: ['child']
