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Erroneous diagnosis within the cranial vault
1Department of Emergency Medicine, Wright State University School of Medicine, Dayton, Ohio 45401-0927.
Insights
Pediatric posterior fossa tumors often present subtly, but this case highlights an accelerated presentation of medulloblastoma with fever and altered mental status, leading to misdiagnosis.
Area of Science:
- Pediatric oncology
- Neuro-oncology
- Pediatric neurology
Background:
- Posterior fossa tumors are common in children, often presenting with insidious symptoms like headache and vomiting due to cerebrospinal fluid obstruction.
- Typical signs include increased intracranial pressure, ataxia, cranial nerve palsies, and pyramidal tract signs.
Observation:
- This case report details a pediatric medulloblastoma with an atypical, accelerated presentation.
- The child presented abruptly with fever, nuchal rigidity, and altered mental status, mimicking meningitis.
Findings:
- The accelerated presentation with minimal prodromal symptoms was not emphasized in previous literature on posterior fossa tumors.
- This atypical presentation led to a misdiagnosis in the emergency department.
Implications:
- Clinicians should consider rare, accelerated presentations of posterior fossa tumors even when symptoms mimic infection.
- Early recognition and diagnosis of pediatric brain tumors are crucial for timely intervention and improved outcomes.
Abstract:
The majority of pediatric neoplasias of the brain are midline growths in the posterior fossa. These mass lesions lead to obstruction of cerebrospinal fluid circulation and cause increased intracranial pressure. Affected children typically present with insidious complaints of headache and vomiting. Ataxia, cranial nerve palsies, or pyramidal tract signs may be present at the time the diagnosis is entertained. In the reports describing pathognomonic clinical features of posterior fossa tumors, an accelerated presentation with minimal prodromal events has not been emphasized. This report details the case of a child with a cerebellar medulloblastoma who presented with abrupt onset of fever, nuchal rigidity, and altered mental status. Emergency department misdiagnosis occurred.