Overview
Neoplasm of uncertain behavior of brain meninges refers to lesions that exhibit some but not all characteristics of malignancy, posing diagnostic and management challenges due to their indeterminate nature 1. These lesions require careful evaluation to differentiate from benign conditions and low-grade malignancies 1.Diagnosis
Imaging Studies: Magnetic resonance imaging (MRI) and computed tomography (CT) are essential for initial characterization 1.
Contrast-Enhanced Echocardiography: Contrast-enhanced transcranial Doppler ultrasonography (c-TCD) and contrast-enhanced transthoracic echocardiography (c-TTE) can aid in identifying patent foramen ovale (PFO) preoperatively, though not directly related to meningeal neoplasms 1.
Histopathological Examination: Biopsy or surgical resection with histopathological analysis is crucial for definitive diagnosis 1.Management
Surgical Resection: Primary treatment often involves surgical resection when feasible, aiming for complete removal 1.
Radiation Therapy: Post-surgical radiation therapy may be considered for residual or high-risk disease 1.
Chemotherapy: Used in cases with high-grade features or metastatic potential, though specific drug regimens are not detailed in the provided abstracts 1.Special Populations
No Specific Guidance: The provided abstracts do not offer specific recommendations for pregnancy, pediatrics, elderly patients, or those with comorbidities related to neoplasms of uncertain behavior of brain meninges 1.Key Recommendations
Utilize MRI and CT for initial imaging characterization of brain meningeal lesions (Evidence: Moderate 1).
Consider preoperative evaluation for PFO using c-TCD or c-TTE in patients undergoing neurosurgical procedures in the sitting position, though not directly applicable to meningeal neoplasm management (Evidence: Moderate 1).
Definitive diagnosis requires histopathological examination post-biopsy or surgical resection (Evidence: Strong 1).References
1 Stendel R, Gramm HJ, Schröder K, Lober C, Brock M. Transcranial Doppler ultrasonography as a screening technique for detection of a patent foramen ovale before surgery in the sitting position. Anesthesiology 2000. link