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Educational draft · awaiting clinical reviewUse Rapid for revision, not patient-care decisions. Check current national and local guidance and the BNF or BNFC before acting.

Palliative radiotherapy and symptom control

Oncology and palliative care · UK scope · Sources checked 27 Aug 2026 · Clinical review pending

RapidFull
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Neurological, airway or haemorrhagic compromise before radiotherapy

New weakness or sphincter dysfunction, impending brain herniation, stridor, major haemorrhage, unstable fracture or obstructed viscus requires immediate physiological and anatomical rescue; radiotherapy may contribute but is not a substitute for stabilisation.

Action: Use ABCDE care, control bleeding and protect an unstable spine or limb. Give dexamethasone 16 mg for neurological metastatic cord compression, obtain whole-spine MRI within 24 hours and seek urgent surgical and radiation review; use airway, neurosurgical, endoscopic, embolisation or operative intervention first when delay for radiation would risk irreversible harm.

Synopsis

Select palliative radiotherapy for a defined pain, bleeding, compression or neurological target, stabilise emergencies before planning, choose the shortest evidence-based fractionation that meets the goal and anticipate response, flare, field toxicity, retreatment and supportive care.

  • Palliative radiotherapy is local treatment for a defined symptom or threatened structure; it does not treat every site of metastatic disease simultaneously.
  • Common indications include uncomplicated painful bone metastasis, selected MSCC, brain metastasis, tumour bleeding, painful soft-tissue mass, airway or venous compression and skin ulceration.
  • First-line assessment defines the exact symptom, anatomical target, emergency, expected survival, performance, previous radiation, systemic options, travel burden and patient goal.
  • Radiotherapy must not delay decompression, fixation, embolisation, endoscopy or airway control when mechanical or physiological rescue is faster and time critical.
  • For uncomplicated painful bone metastasis, a single 8 Gy fraction is an evidence-based first-line schedule for many adults and reduces travel without reducing the chance of pain relief.
  • A multifraction schedule such as 20 Gy in 5 fractions or 30 Gy in 10 may be selected for postoperative fields, selected cord or neurological disease, large soft-tissue components, retreatment constraints or longer local-control goals.
  • For MSCC with neurological signs, give dexamethasone 16 mg immediately and arrange whole-spine MRI within 24 hours; surgery and stability assessment precedes selection of urgent radiation.
  • NICE advises 8 Gy single-fraction radiotherapy for many nonsurgical MSCC cases unless side-effect risk makes a multifraction course more appropriate.
  • Stereotactic radiosurgery is preferred over whole-brain radiation for selected limited brain metastases; lesion volume, location, symptoms, systemic control and prognosis determine selection.
  • Haemostatic radiotherapy can reduce bleeding from lung, bladder, pelvic, gastrointestinal or fungating tumours, but major active haemorrhage still needs resuscitation and immediate source control.
  • Planning CT in the reproducible treatment position is the reference geometric study; diagnostic CT, MRI or PET is fused when it improves target definition.
  • Pain relief usually begins after several days and may continue improving for four to six weeks; continue background and rescue analgesia during the response interval.
  • Explain acute toxicity by field, not by the word radiation: thorax may cause oesophagitis, abdomen nausea, pelvis diarrhoea or cystitis and brain treatment fatigue or oedema.
  • Document dose, fractionation, field and organs exposed permanently because future surgery and re-irradiation depend on cumulative biological dose.

    • Key red flags

    Back pain with weakness, gait change, sensory loss or bladder or bowel dysfunction requires the MSCC emergency pathway before a routine radiotherapy referral.

    A painful lytic long-bone lesion with functional pain, extensive cortical destruction or inability to weight bear needs orthopaedic stabilisation assessment before radiation alone.

    Falling consciousness, pupillary asymmetry, seizure or rapidly progressive focal deficit requires emergency CT, corticosteroid for tumour oedema and neurosurgical review.

    Stridor, rapidly worsening facial or neck swelling, hypoxia or inability to lie flat demands immediate airway and superior-vena-cava assessment before simulation.

    Haemodynamic bleeding, haematemesis, major haemoptysis or rapidly falling haemoglobin requires resuscitation, transfusion and endoscopic, surgical or embolisation control while radiation is considered.

    Severe focal pain, fever, peritonism or sepsis during radiation is not routine acute toxicity and requires infection, perforation or obstruction evaluation.

    A previous irradiated field, implanted cardiac device, possible pregnancy or inability to reproduce treatment position requires early physics and specialist planning, not omission from the referral.

    Investigation priorities

    01
    First-line symptom, function and goal assessmentFirst stepFirst line

    Define the target, mechanism, severity, emergency, performance, prognosis, previous local treatment and outcome the patient values.

    Management branches

    Urgent referralStabilise first and select the fastest effective sequence

    Tumour causes neurological loss, airway compromise, unstable bone, major bleeding or obstructed organ.

    1. Use ABCDE care and activate MSCC, intracranial, airway, haemorrhage or fracture pathway with corticosteroid, transfusion, immobilisation or decompression as indicated.
    2. Obtain the time-critical imaging and joint surgical, interventional and radiation review, deciding whether an operation, embolisation, stent or drain must precede radiation.
    3. Simulate and deliver the shortest evidence-based radiation schedule compatible with anatomy and recovery, with a written rescue and toxicity plan.

    Key medicines

    Dexamethasone for neurological MSCCGive dexamethasone 16 mg orally immediately, or equivalent parenterally, when neurological symptoms or signs suggest MSCC, then 16 mg daily while surgery or radiotherapy is awaited and taper after definitive treatment starts.Monitor glucose, infection, mood, proximal weakness and gastrointestinal risk; stop if MSCC is excluded and seek specialist advice before steroid in unconfirmed lymphoma without neurological signs.
    Analgesic cover for radiation response and flareContinue the established regular non-opioid and opioid schedule with immediate-release rescue matched to current 24-hour exposure; some services use a short dexamethasone course for high bone-pain-flare risk.Do not sedate mechanical instability into unsafe loading; monitor bowel, alertness, renal function and steroid effects and reduce analgesia only after sustained response.
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    Sources and review status4 sources · checked 27 Aug 2026 · clinical review pending+
    Sources

    Sources and review status

    National guidance is shown before implementation-dependent detail. Typical adult dose examples remain subject to patient factors, contraindications and the live BNF or specialist protocol. Source check completed 27 Aug 2026; clinical approval remains outstanding.

    • Royal College of Radiologists dose fractionation guidanceEvidence-based palliative schedules for bone, bleeding, neurological and other symptom targets.
    • NICE NG234 spinal metastases and MSCCUrgent imaging, steroid, surgery and palliative-radiotherapy fractionation.
    • NICE NG99 brain metastases recommendationsSurgery, stereotactic and whole-brain treatment selection.
    • UKONS acute oncology initial management guidelinesImmediate stabilisation and dangerous symptom alternatives during cancer treatment.

    Editorial contact: Doctor’s Passport editorial team. Source-check date is separate from clinical approval. Report a content problem · Content changes

    Authoring stateRapid draftClinical stateAwaiting reviewJurisdictionUnited Kingdom
    Neurological emergency

    Weakness, sensory or sphincter change, falling consciousness or posterior-fossa pressure needs urgent imaging, steroid when indicated and decompression assessment.

    Unexpected severe deterioration

    Fever, peritonism, shock, new major hypoxia or rapidly progressive neurological loss is not routine toxicity and requires emergency reassessment.