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MRI of intracranial subependymoma: report of a case
1Department of Neurosurgery, Seoul National University College of Medicine, Korea.
Abstract:
Subependymoma is a rare, benign intraventricular tumour and a case of septum pellucidum origin examined with CT and MR is reported. Well demarcated non-enhancing mass with multiple small intratumoral cysts is demonstrated on CT and MR images. The differential diagnosis from ependymoma has some therapeutic implications but may not be possible by CT or MRI.
Insights
Subependymoma, a rare benign brain tumor originating from the septum pellucidum, presents as a well-demarcated mass with cysts on CT and MR imaging. Distinguishing it from ependymoma solely via imaging can be challenging, impacting treatment decisions.
Area of Science:
- Neuro-oncology
- Neuroradiology
- Pathology
Background:
- Subependymoma is a rare, benign glial tumor typically arising within the ventricles of the brain.
- Intraventricular tumors require accurate diagnosis for appropriate management.
- The septum pellucidum is an uncommon origin for subependymoma.
Observation:
- A case of subependymoma originating from the septum pellucidum is presented.
- Computed tomography (CT) and magnetic resonance (MR) imaging were utilized for examination.
- The tumor appeared as a well-demarcated, non-enhancing mass with multiple small intratumoral cysts.
Findings:
- CT and MR imaging demonstrated characteristic features of the subependymoma.
- The imaging findings included a distinct border and internal cystic components.
- No enhancement was noted after contrast administration.
Implications:
- Accurate differentiation between subependymoma and ependymoma is crucial due to differing therapeutic approaches.
- Distinguishing these entities based solely on current CT and MRI may not always be definitive.
- Further diagnostic modalities or histopathological analysis might be necessary for definitive diagnosis and treatment planning.