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MRI of primary meningeal sarcomas in two children: differential diagnostic considerations
1Department of Radiology, Klinikum Innenstadt, University of Munich, Germany.
Abstract:
Meningeal sarcomas are very rare, highly aggressive tumours affecting children more frequently than adults. The clinical course and MRI of meningeal sarcomas in two cases are discussed with special regard to possible misinterpretation. In one case MRI demonstrated a circumscribed mass in contact with the meninges, with central areas of haemorrhage. In the other, a case of primary leptomeningeal sarcomatosis, several MRI examinations over the course of almost a year were unhelpful, despite severe neurological complaints. Then MRI revealed meningeal contrast enhancement all over the brain and spinal canal, together with cerebral infarcts. MRI of meningeal sarcomas has not been discussed in the literature. MRI did not permit specific diagnosis, but enabled visualisation of the extent of the tumour and/or meningeal involvement. Early histological diagnosis is indispensable for adequate treatment.
Insights
Meningeal sarcomas are rare, aggressive tumors. MRI can show tumor extent but not specific diagnosis, necessitating early histological confirmation for effective treatment.
Area of Science:
- Neuro-oncology
- Pediatric oncology
- Diagnostic imaging
Background:
- Meningeal sarcomas are rare, aggressive neoplasms with a predilection for children.
- The diagnostic utility of Magnetic Resonance Imaging (MRI) for meningeal sarcomas remains underexplored in the literature.
Observation:
- This report details the clinical course and MRI findings in two pediatric cases of meningeal sarcoma.
- One case presented as a circumscribed meningeal mass with central hemorrhage.
- The second case involved primary leptomeningeal sarcomatosis, initially showing non-specific MRI findings despite severe neurological symptoms.
Findings:
- MRI effectively visualized tumor extent and meningeal involvement in both cases.
- However, MRI did not provide a specific diagnosis for meningeal sarcomas.
- In the sarcomatosis case, later MRI revealed diffuse leptomeningeal enhancement and cerebral infarcts.
Implications:
- Accurate and timely histological diagnosis is crucial for initiating appropriate treatment for meningeal sarcomas.
- MRI plays a vital role in assessing the anatomical spread of these rare tumors.
- Further research into MRI characteristics may improve diagnostic accuracy for meningeal sarcomas.