Brain Tumour Surgery Recovery: Rehabilitation and Follow-Up

Recovery after brain tumour surgery depends on preventing and treating a short list of complications, on structured rehabilitation, and on lifelong MRI follow-up. In the experience of Dr. Rahul Gupta, Senior Director & HOD Neuro and Spine Surgery, Fortis Hospital, Noida, India, a patient who comes to surgery without a neurological deficit has a 90% chance of leaving hospital without one.

This article sets out the complications Dr. Gupta's team watches for, how brain swelling is managed, what rehabilitation and follow-up involve, and the four facilities he regards as the minimum for safe brain tumour surgery in a resource-limited setting. The diagnostic pathway and the aims of surgery are covered in the complete guide to diagnosis and management of brain tumours.

Complications that shape recovery after brain tumour surgery

Dr. Gupta lists the most important complications after brain tumour surgery as:

• Seizures.
• Post-operative brain oedema, swelling of the brain around the operated area.
• Neurological deficits, such as weakness or speech difficulty, when the operation involves the motor cortex or another important area.
• Cranial nerve injury, when the tumour sits at the skull base, where the nerves controlling vision, eye movement, facial movement, hearing and swallowing run.

Less commonly, there can be bleeding at the operation site (post-operative haemorrhage) or infection. Deficits and nerve injury depend on where the tumour lies, which is why the location of a tumour shapes the risk discussion before any operation.

The context matters. When Dr. Gupta was a resident about 25 years earlier, CSF leaks, infection, oedema and the need for a ventilator were common after brain tumour surgery, and ventilators themselves were hard to obtain. Better imaging, operating-theatre technology and neuroanaesthesia have changed that picture, as described in awake craniotomy, neuronavigation and fluorescence-guided surgery.

Managing brain swelling after surgery

Cerebral oedema is one of the main threats in the first days after surgery, because swelling inside the closed skull raises pressure on the brain. Dr. Gupta's team uses three measures:

1. Elective ventilation. The patient is kept on a ventilator for a planned period, so that breathing and carbon dioxide levels, which influence brain swelling, are tightly controlled.
2. Decongestant drugs. Mannitol or 3% saline (hypertonic saline) draws fluid out of the brain tissue.
3. Leaving the bone flap out. Sometimes the piece of skull removed to reach the tumour is not replaced at the end of the operation, giving the swollen brain room to expand. The bone flap is replaced one to two months later.

Drains after surgery

In Dr. Gupta's practice, a drain is placed after surgery in around 80% of cases. In children with hydrocephalus, an external ventricular drain may be placed before the tumour operation itself to relieve pressure, as in the paediatric case described in embolisation, endoscopy and paediatric brain tumour surgery.

Why the intensive care unit matters

Some patients need ventilatory support for one or two days after brain tumour surgery. In Dr. Gupta's experience, managing these patients well in an intensive care unit on ventilatory support can reduce the chance of post-operative complications by almost 25 to 30%. At his hospital, the same neuroanaesthesia team that manages the patient during the operation runs the neuro intensive care unit afterwards, acting as neurocritical care specialists. One team therefore manages the patient from the operating table to discharge from intensive care.

Rehabilitation after brain tumour surgery

Dr. Gupta's position is that every patient needs post-operative rehabilitation, not only those with a deficit. That rehabilitation is both physical and mental, and it involves:

• The neurosurgery team, whom the patient should see regularly and stay in touch with.
• Physiotherapists and rehabilitation doctors, for strength, mobility and function.
• A psychiatrist or psychologist, for psychological support.

Even a patient who leaves hospital without a deficit needs some psychological support. If the tumour turns out to be malignant, much more is needed, because the patient then faces radiotherapy and chemotherapy as well. Dr. Gupta recommends good physical and psychological support for at least 3 to 6 months, with frequent visits to the neurosurgeon during that period.

How often to repeat MRI after brain tumour surgery

Follow-up imaging is lifelong. Dr. Gupta's schedule depends on the tumour:

He stresses that patients need constant follow-up with repeated MRI throughout their lives. A tumour can recur even after a technically successful operation, and scheduled imaging is how recurrence is detected early. The definitive diagnosis on which this schedule rests comes from histopathological examination of the tissue removed at surgery.

Prognosis: when treatment offers little

A doctor at the session asked a difficult question: are there brain tumours for which surgery, chemotherapy and radiotherapy offer no benefit? Dr. Gupta's answer centred on the extremes of age. Very large tumours in infants, and very large tumours in elderly patients involving critical areas of the brain, may not benefit from surgery, chemotherapy or radiotherapy.

Brainstem and deep-seated thalamic gliomas form a separate group. A diffuse brainstem glioma in a child can be treated with radiotherapy on its typical MRI appearance alone. Thalamic and other deep-seated tumours are usually biopsied first, by a stereotactic or navigation-guided technique, because histology and molecular markers guide treatment and lookalike lesions, such as lymphoma, are treated differently.

For glioblastoma, the outlook is poor, but treatment is still worthwhile. Chemotherapy and radiotherapy can increase survival and help the patient achieve a good quality of life for that shorter span of time, and research into the disease continues. The relative outlook of the common tumour types is summarised in the complete guide, and the difference between benign and malignant tumours is set out, from a separate masterclass, in Dr. Sonal Gupta's guide to benign and malignant brain tumours.

Safe brain tumour surgery in resource-limited settings

Asked by a doctor at the session how post-operative complications can be reduced in a resource-limited area, Dr. Gupta named four essentials and described all four as mandatory.

1. MRI. Without an MRI, brain tumour surgery should not be performed. This, he said, is very clear.
2. An operating microscope. It need not be high-end. Fluorescence software and neuronavigation are optional, but some magnification, in the form of at least a basic microscope, is mandatory.
3. A trained neuroanaesthetist. The anaesthetist must have the equipment, technology and techniques to reduce brain swelling during surgery and to keep blood pressure and other vital signs under control. Ideally, he or she should have worked in a neurosurgical centre somewhere in the world for at least one or two years.
4. A post-operative ICU with ventilators, because some patients need ventilation for one or two days, and good ICU care is what reduces complications by almost 25 to 30%.

With these four in place, high-end gadgets are not required for many operations. Superficial tumours such as meningiomas, surface gliomas and straightforward intraventricular tumours can be removed. Difficult tumours are a different matter: because well-equipped centres achieve meaningful reductions in mortality and morbidity, Dr. Gupta's advice is that they should be referred to a centre where the full range of technology is available.

When to refer a brain tumour to a specialist centre

Read alongside the rest of the masterclass, these principles point towards referral to a specialist centre when:

• The tumour lies in an eloquent area, such as the speech or motor cortex, where awake craniotomy and neuromonitoring reduce the risk of deficit.
• The tumour is deep-seated, at the skull base, or encases major blood vessels.
• The tumour is highly vascular and may need preoperative embolisation.
• Local imaging, microscopy, neuroanaesthesia or ICU support falls short of the four essentials.

Indicative costs for brain tumour surgery are on the craniotomy for brain tumour excision cost page. The full set of doctors' questions from the session, including those on complications, follow-up and resource-limited practice, is in the live discussion with Dr. Rahul Gupta, and his background is on his doctor profile.