SU28.5-6 | Esophageal Anatomy and Disorders — Summary & Reflection

KEY TAKEAWAYS

Dysphagia is the cardinal oesophageal symptom, and its pattern divides the diagnoses: progressive solids-then-liquids with weight loss = mechanical/malignant, whereas solids and liquids together from the outset = motility (achalasia). New, progressive dysphagia over forty demands endoscopy with biopsy first. Applied anatomy explains the disease and its hazards — three constrictions (where corrosives and foreign bodies lodge), a segmental blood supply, no serosa over the thoracic oesophagus, and the LES whose incompetence causes GERD and whose failure to relax causes achalasia. Chronic GERD drives Barrett's metaplasia, the premalignant step toward lower-third adenocarcinoma, while upper/middle-third cancers are squamous. Investigations answer specific questions: endoscopy+biopsy (tissue), barium swallow (bird-beak vs irregular stricture), manometry (gold standard for achalasia), pH study (GERD), CT/EUS/PET (staging). Management: PPI ± fundoplication for GERD; dilatation/Heller's myotomy/POEM for achalasia; dilatation for corrosive strictures; and for carcinoma, curative oesophagectomy (often with neoadjuvant therapy) in the few localised cases but palliative stenting in the majority who present late.

REFLECT

Recall a patient you have seen, or imagine clerking one, who complained of difficulty swallowing. Did you ask the questions that separate the diagnoses — solids first or solids-and-liquids together, the speed of progression, weight loss, regurgitation, heartburn and the risk factors — and did you act on the red flags? Consider how you would explain to a frightened patient why an endoscopy is needed urgently, and reflect on how knowing the oesophagus has no serosa and a segmental blood supply changes your sense of why its cancers are so dangerous and its surgery so demanding. Finally, think about the GERD–Barrett's–adenocarcinoma sequence: how would mastering it change the advice you give a patient with long-standing heartburn?