A 49-year-old has a hypervascular mass splaying the internal and external carotid arteries. MRI suggests a Shamblin III carotid body tumour and plasma metanephrines are elevated. What should happen before any operation?
The dangerous error is treating a functional, carotid-encasing lesion as a routine neck mass; preparation and multidisciplinary vascular planning precede intervention.
A. Perform angiographic embolisation before alpha blockade: Embolisation may be considered for vascular planning, but manipulating a secretory tumour before endocrine preparation risks crisis.
B. Offer stereotactic radiotherapy before confirming secretory and inherited status: Radiotherapy may control selected lesions, but biochemical and genetic findings materially affect preparation, surveillance and family care.
C. Biochemical/endocrine control, genetic assessment and skull-base vascular MDT planning: Secretory status, inherited disease, cranial-nerve and carotid risk, embolisation considerations and alternatives must be integrated before treatment.
D. Plan excision on MRI anatomy alone without assessing carotid tolerance or lower cranial nerves: A Shamblin III tumour may require carotid reconstruction and carries major cranial-neuropathy risk, requiring fuller functional planning.
E. Undertake planned carotid sacrifice without balloon-occlusion or vascular-reconstruction assessment: Cerebral perfusion and reconstructive options must be evaluated before any possible carotid sacrifice.
If biochemical testing were normal and the lesion small in an elderly asymptomatic patient, surveillance or radiotherapy might outweigh surgical morbidity.
Independent Clinora educational preparation material; not official JCIE content, an accredited programme, or a substitute for local policy and specialist clinical judgement.
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