Glioma: Surgery, Radiotherapy and Drug Treatment

What is this condition?

Gliomas arise from supporting cells of the brain and range from slower-growing tumours to aggressive glioblastoma. Modern diagnosis combines microscopic appearance with molecular markers, so the final name and grade may change after tissue testing. The treatment aim is not merely to remove an MRI shadow; it is to obtain diagnosis, control tumour while protecting function, and plan the next treatment intelligently.

What symptoms can it cause?

• New seizure, progressive headache or vomiting
• Weakness, language, memory, personality or visual change
• Subtle decline in work, judgement or coordination
• Rapid drowsiness can indicate swelling or bleeding

How is it assessed and diagnosed?

Contrast MRI defines the lesion and surrounding swelling. Diffusion, perfusion, spectroscopy, functional MRI and tractography may help selected cases but do not replace tissue diagnosis. Biopsy or resection provides material for histology and molecular markers such as IDH and other alterations relevant to classification and treatment.

Treatment without surgery

Steroids reduce swelling temporarily but do not cure the tumour and should be used under supervision. Anti-seizure medicine is used for patients with seizures. Radiotherapy and chemotherapy or other drug treatments are chosen according to age, performance, grade, molecular profile and extent of surgery.

When is surgery or a procedure considered?

Surgery is usually advised when tissue is needed and safe removal can reduce mass or symptoms. For tumours near speech, movement or vision networks, navigation, tractography, stimulation mapping or awake techniques may help define a safer boundary. If open removal carries excessive risk, stereotactic biopsy may be the better first step.

Treatment and procedure options

• Stereotactic biopsy
• Image-guided microsurgical resection
• Functional mapping or awake surgery in selected eloquent-area tumours
• Postoperative radiotherapy
• Chemotherapy, targeted or trial treatment based on pathology and availability

Risks from the disease and from treatment

Untreated high-grade glioma can progress quickly; lower-grade tumours may transform over time. Tumour infiltration means even apparently complete surgery does not necessarily equal cure, so combined treatment and surveillance are central. 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

Postoperative MRI is often obtained early to assess extent. Final pathology may take time because molecular testing is needed. Rehabilitation and the oncology plan should begin promptly. Later MRI changes can reflect tumour, treatment effect or both, and must be interpreted in context. 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

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