Computed tomography of intracranial ependymomas

Area of Science:

• Neuroradiology
• Pediatric Oncology
• Neuropathology

Background:

• Ependymoma is a primary tumor of the central nervous system.
• Accurate histological diagnosis is crucial for effective treatment planning.
• CT imaging plays a role in the initial detection and characterization of brain tumors.

Purpose of the Study:

• To identify key computed tomography (CT) imaging features suggestive of ependymoma.
• To correlate imaging findings with histological diagnosis.
• To highlight the challenges in improving patient outcomes for ependymoma.

Main Methods:

• Review of CT scans from patients with confirmed ependymoma.
• Analysis of tumor characteristics including location, density, calcifications, and presence of cysts.
• Correlation of imaging findings with early-life presentation.

Main Results:

• Isodense tumors expanding the fourth ventricle or its outlets suggest ependymoma.
• Presence of small, round calcifications is a common feature.
• Isodense masses in the cerebral white matter with cysts and calcifications, particularly in young patients, also indicate ependymoma.
• High detection accuracy (95%) was achieved with CT.

Conclusions:

• Specific CT findings can strongly suggest an ependymoma diagnosis.
• Early-life presentation is a notable factor.
• Despite advances in detection and therapy, ependymoma continues to have a poor prognosis.