Medulloblastoma: Clinical presentation.

Area of Science:

• Pediatric neuro-oncology
• Clinical epidemiology
• Tumor pathology

Background:

• Medulloblastomas are aggressive posterior fossa tumors with limited literature on clinical features.
• Understanding clinical presentations is vital for accurate diagnosis and patient management.
• Comparison with other posterior fossa tumors like ependymoma and astrocytoma is needed.

Purpose of the Study:

• To review clinical and epidemiological variables of pediatric medulloblastomas.
• To correlate clinical findings with anatomical, pathological features, and outcomes.
• To define distinct clinical-pathological entities within medulloblastomas.

Main Methods:

• Retrospective review of 91 pediatric medulloblastoma cases (1997-2017).
• Collection and intercorrelation of clinical, epidemiological, anatomical, and pathological data.
• Comparison with 32 posterior fossa ependymomas and 130 cerebellar astrocytomas.

Main Results:

• Medulloblastomas showed a higher male-to-female ratio and shorter diagnostic delay than astrocytomas.
• Patients were older than ependymoma cases; intracranial hypertension was constant.
• Two clusters identified: 'nodular' (younger age, specific tumor features) and 'metastatic' (altered status, initial metastases).

Conclusions:

• Meticulous initial clinical data collection is integral to oncological evaluation.
• Identifying genetic and prognostic risk factors aids in defining clinical-pathological entities.
• This approach facilitates better understanding and management of pediatric medulloblastomas.