Magnetic resonance image of PNET Most children that develop primitive neuroectodermal<unk> s are diagnosed early in life, usually at around 3-6.8 years of age. Symptoms patients present at time of diagnosis include irritable mood, visual difficulties, lethargy, and ataxia. The circumference of the patient's head might also suffer an enlargement and they might be subject to seizures, especially if they have less than one year of life. Several analysis can be used to determine the presence of the disease. Physical examinations showing papilledema, visual field defects, cranial nerves palsy, dysphasia, and focal neurological deficits are evidences for possible<unk> . PNETs can also be spotted through computed tomography (CT) and magnetic resonance imaging (MRI). In images produced by MRIs, an irregular augmentation among a solid mass will indicated the presence of<unk> . However, the results of MRIs are usually ambiguous in defining the presence for this specific<unk> . In CT scans, the presence of PNETs will be indicated by an elevated density and an increase in volume of the brain. The CT scan can also show calcification, which is present in 41-44% of PNET cases. Since the<unk>  can be replicated in other parts of the nervous system through the cerebrospinal fluid (CSF), a CSF analysis can also be conducted. A spinal MRI is a fourth type of analysis that is useful in investigating the level of<unk>  propagation to the spinal cord.
Central nervous system primitive neuroectodermal tumor
Central nervous system cyst
Extracranial germ cell tumor
Pediatric ependymoma
Primary central nervous system lymphoma
Primitive neuroectodermal tumor
Glial tumor
Central neurocytoma