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Chordoid meningioma--case report.
Takashi Mitsuhashi1, Shinsuke Ono, Tadashi Inohara
1Department of Neurosurgery, Tokyo Metropolitan Hiroo General Hospital, Tokyo, Japan.
Neurologia Medico-Chirurgica
|January 26, 2006
Summary
A rare chordoid meningioma was incidentally discovered in a 69-year-old female. Immunohistochemical staining aided in distinguishing this brain tumor from other chordoid neoplasms.
Area of Science:
- Neuropathology
- Neurosurgery
- Radiology
Background:
- Meningiomas are tumors arising from the meninges, the membranes surrounding the brain and spinal cord.
- Chordoid meningioma is a rare subtype with distinct histological and radiological features.
- Accurate diagnosis is crucial for appropriate management and prognosis.
Observation:
- A 69-year-old female presented with an incidentally detected de novo lesion in the left parietal convexity.
- Computed tomography (CT) revealed an isodense mass with peritumoral edema and homogeneous enhancement.
- Magnetic resonance imaging (MRI) demonstrated characteristic findings including isointensity on T1-weighted imaging, hyperintensity on T2-weighted imaging, homogeneous enhancement, and a dural tail sign.
Findings:
- The tumor was completely surgically removed.
- Histopathological examination confirmed the diagnosis of chordoid meningioma.
- Combined immunohistochemical staining proved essential in differentiating chordoid meningioma from other chordoid neoplasms, highlighting its diagnostic utility.
Implications:
- This case underscores the importance of advanced imaging techniques in identifying rare meningioma subtypes.
- Histopathology and immunohistochemistry are critical for definitive diagnosis and classification of chordoid meningioma.
- Understanding the diagnostic nuances of chordoid meningioma can improve patient care and treatment strategies.