CT and MR Imaging in Choroid Plexus Carcinoma. Report of Two Cases

Area of Science:

• Pediatric Radiology
• Neuroradiology
• Pediatric Oncology

Background:

• Choroid plexus carcinomas are rare embryonal tumors occurring in the brain's ventricular system.
• Early diagnosis is crucial for effective management in young children.

Purpose of the Study:

• To describe the characteristic computed tomography (CT) and magnetic resonance (MR) imaging findings of choroid plexus carcinomas in infants and toddlers.
• To correlate imaging findings with tumor location and associated complications.

Main Methods:

• Retrospective analysis of CT and MR imaging studies in children under two years of age diagnosed with choroid plexus carcinoma.
• Detailed review of imaging features including lesion location, enhancement patterns, and presence of hydrocephalus or invasion.

Main Results:

• Intensely enhancing intraventricular mass lesions were consistently observed.
• The atrium of the lateral ventricle was the most common tumor location.
• Hydrocephalus and cerebral parenchymal invasion were frequent associated findings.

Conclusions:

• CT and MR imaging are valuable tools for diagnosing choroid plexus carcinomas in young children.
• Characteristic imaging features include intraventricular enhancing masses, often in the lateral ventricle atrium, with associated hydrocephalus and invasion.