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Pancoast tumour and superior vena cava obstruction

Essential points for quick revision.

2 min synopsisUK scopeSources checked 27 Aug 2026Clinical review pending
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Escalate

Stridor, inability to lie flat, rapidly worsening facial or tongue swelling, syncope, confusion, reduced consciousness or signs of cerebral oedema in suspected superior vena cava obstruction require immediate ABCDE assessment and same-day acute oncology, anaesthetic and interventional radiology involvement. New limb weakness, sphincter disturbance or severe spinal pain with an apical mass raises possible cord or root compression and needs emergency imaging and specialist escalation.

Synopsis

Recognise superior sulcus invasion and superior vena cava obstruction, distinguish their emergency features, and coordinate diagnosis, symptom relief and definitive cancer care safely.

  • A Pancoast tumour is a superior sulcus lung cancer whose importance comes from local invasion of the lower brachial plexus, sympathetic chain, ribs, vertebrae or subclavian vessels rather than a distinctive histological type.
  • Severe shoulder or scapular pain radiating down the medial arm, C8-T1 weakness or wasting, and ipsilateral Horner syndrome should prompt deliberate inspection of the lung apex even without cough or haemoptysis.
  • A normal or equivocal chest radiograph does not exclude an apical lesion; contrast-enhanced CT and targeted MRI answer different staging questions.

Key red flags

Neural or vertebral extension

Progressive arm weakness, severe radicular pain, long-tract signs, gait disturbance, urinary symptoms or a sensory level suggest foraminal or spinal canal extension and require urgent MRI and spinal or oncology advice.

Investigation priorities

01
ABCDE assessment with neurological and airway examinationFirst step

Grade physiological threat before arranging definitive tests.

Management branches

SVCO emergencyStabilise threatened airway or brain

Stridor, rapidly progressive oedema, severe orthopnoea, confusion, syncope or reduced consciousness.

  1. Sit the patient upright, begin ABCDE monitoring, give oxygen for hypoxaemia and summon senior anaesthetic, acute oncology and interventional radiology help without delay.
  2. Use the fastest safe contrast imaging that will define obstruction and intervention, but do not force a severely orthopnoeic patient to lie flat without airway planning.
Stable SVCOSecure diagnosis before definitive treatment

Venous obstruction without airway, cerebral or haemodynamic compromise.

Key medicines

Controlled oxygenTitrate to 94-98% saturation for most adults, or 88-92% if at risk of hypercapnic respiratory failure pending blood gases.
DexamethasoneUse only after senior acute-oncology advice at the dose in the current local oncological-emergency protocol.
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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.

Authoring stateRapid draftClinical stateAwaiting reviewJurisdictionUnited Kingdom