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MediumGastroenterologyDysphagia / Suspected Oesophageal Cancerukmlamrcp part 1prescribing safety assessmentmrcem sbapanemrcgp akt

A 72-year-old man presents with a 6-month history of progressive dysphagia, initially for solids, now also for liquids, associated with significant weight loss (8 kg). He is a lifelong smoker and drinks 20 units of alcohol per week. What is the single most important investigation to perform urgently?

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