Definition

1. Noun:
   • A type of tumor: A meningioma is a specific kind of tumor that originates from the meninges, the protective membranes that cover the brain and spinal cord. It is typically characterized by slow growth and can, in some cases, be cancerous (malignant).

Usage

• The term "meningioma" is used exclusively in medical contexts to describe this specific pathological condition. It is a countable noun (e.g., , ).

Examples

• Noun:
  • The MRI scan revealed a small, benign meningioma near the frontal lobe.
  • Surgical removal is a common treatment for symptomatic meningiomas.
  • Although most meningiomas are slow-growing, regular monitoring is essential.

Advanced Usage

• "Grade I meningioma": Refers to the most common and typically benign form, which grows slowly.
• "Atypical or malignant meningioma": Refers to higher-grade (Grade II or III) tumors that grow more quickly and have a higher chance of recurring after treatment.

Variants and Related Words

• Meningeal (adj): Pertaining to the meninges.
  • The meningeal layers provide crucial protection.
• Meninges (n): The plural form referring to the three membranes (dura mater, arachnoid mater, pia mater) that envelop the brain and spinal cord.

Synonyms

• Meningeal tumor: A direct descriptive synonym.
• Intracranial tumor / Neoplasm: Broader terms that include meningiomas among other types of brain tumors.

Related Phrases / Collocations

• Diagnose a meningioma: To identify the presence of this tumor.
• Resect a meningioma: To surgically remove the tumor.
• Asymptomatic meningioma: A tumor that is present but not causing any noticeable symptoms.

Noun

1. a tumor arising in the meninges which surround the brain and spinal cord; usually slow growing and sometimes malignant