Meningioma

What is this condition?

A meningioma usually grows from the coverings of the brain or spinal cord rather than from brain cells. Many are slow-growing and WHO grade 1, but their behaviour varies. Location matters: a small tumour beside the optic nerve, major vessels or brainstem may be more important than a larger tumour in a less critical position.

What symptoms can it cause?

• Seizure, persistent headache or personality change
• Weakness, numbness, speech or balance difficulty
• Visual loss, double vision, hearing change or facial symptoms depending on location
• Sometimes no symptoms and discovery on an unrelated scan

How is it assessed and diagnosed?

Contrast MRI shows size, attachment, swelling and relationship to vessels or nerves. CT may show calcification and bone change. Serial scans help establish growth. Angiography or specialised vascular imaging is occasionally needed near major vessels. Pathology after surgery confirms grade and predicts follow-up intensity.

Treatment without surgery

A small asymptomatic meningioma may be observed with scheduled MRI. Seizures and swelling are treated medically when present. Focused radiation may control selected small, residual, recurrent or surgically difficult tumours.

When is surgery or a procedure considered?

Surgery is considered for documented growth, troublesome symptoms, seizures not controlled appropriately, pressure on the brain, threatening location or uncertainty in diagnosis. The objective is maximal safe removal, including involved covering or bone when reasonable, without sacrificing critical nerves or vessels.

Treatment and procedure options

• Observation with interval MRI
• Microsurgical removal through a location-specific craniotomy
• Radiosurgery or fractionated radiotherapy in selected cases
• Combined subtotal surgery and later radiation when complete removal is unsafe

Risks from the disease and from treatment

Growth can cause irreversible visual, motor, language or brainstem injury, hydrocephalus or seizures. Some tumours remain stable for years, so immediate intervention is not automatically safer than surveillance. No procedure is risk-free. General risks include anaesthetic problems, bleeding, infection, blood clots and delayed healing. Neurological risks depend strongly on the exact structure being treated and may include new weakness, numbness, speech or vision change, seizure, cerebrospinal-fluid leakage, need for another procedure or failure to obtain the hoped-for relief. The surgeon should discuss the risks that apply to the individual case.

Recovery and follow-up

Recovery depends on location, preoperative deficits and brain swelling. Pathology, extent of removal and postoperative MRI guide follow-up. Seizure medicine is continued only as clinically indicated, not automatically forever. Recovery is not judged only by the first few days. Pain control, wound care, nutrition, safe mobilisation, physiotherapy and planned follow-up all matter. Some symptoms improve quickly after pressure is relieved; others recover gradually over weeks or months, and permanent nerve injury may not fully reverse.

Preparing for your consultation

Bring the original MRI/CT images or digital files, written reports, previous prescriptions, a current medicine list, and any operative or pathology records. For sudden warning symptoms, use the nearest emergency department rather than waiting for a routine appointment.

Authoritative patient-information sources

• AANS — Classification of Brain Tumors: https://www.aans.org/patients/conditions-treatments/classification-of-brain-tumors/
• US National Cancer Institute — Adult Central Nervous System Tumors: https://www.cancer.gov/types/brain/patient/adult-brain-treatment-pdq