01Core principlesThe concepts and mechanisms needed to understand the subject.
Alarm symptoms estimate serious-disease probability; they do not diagnose cancer. Progressive oesophageal dysphagia may reflect carcinoma, peptic stricture, eosinophilic remodelling or achalasia, while early satiety, persistent vomiting, anaemia and weight loss can arise from gastric cancer or benign ulcer disease. NICE NG12 uses symptoms to select urgent investigation because waiting for a complete syndrome loses time.
Separate urgent outpatient investigation from an emergency. A stable patient who swallows fluids can enter the suspected-cancer pathway with nutrition support and precise deterioration advice. A patient unable to swallow saliva, actively bleeding or septic after perforation needs same-day hospital care. The destination and pace therefore depend on physiology and airway safety as well as cancer probability.
A high-quality referral states symptom onset and progression, measured weight change, performance status, comorbidity, anticoagulants, previous endoscopy and communication needs. Endoscopy locates and biopsies disease; pathology identifies histology and biomarkers; staging tests should be ordered in the sequence most likely to change treatment. The clinician who refers remains responsible for tracking the outcome.
Key points
- Refer on the NICE NG12 suspected oesophago-gastric cancer pathway for dysphagia at any adult age, or age 55 or over with weight loss plus upper-abdominal pain, reflux or dyspepsia. Also consider this pathway for an upper-abdominal mass consistent with gastric cancer.
- Normal haemoglobin does not neutralise progressive dysphagia. NG12 has a separate non-urgent direct-access endoscopy branch: haematemesis after appropriate acute-bleeding assessment, and specified combinations from age 55 involving resistant dyspepsia, low haemoglobin, raised platelets, nausea or vomiting. The full combinations are listed under investigations.
- Ask about speed of progression, solids and liquids, pain, regurgitation, bleeding, appetite, weight trajectory, smoking, alcohol, reflux and previous gastric surgery.
- Stable patients meeting NG12 enter the suspected-cancer pathway; inability to swallow saliva, airway compromise, shock from bleeding or perforation physiology requires same-day emergency care rather than waiting for an outpatient appointment.
- Endoscopy must describe the lesion and obtain tissue: aim for at least eight viable biopsies from an advanced oesophageal or gastric cancer, but only one or two targeted biopsies from a potentially endoscopically resectable lesion to avoid impairing later resection.
- Referral is unfinished until attendance, endoscopy, pathology and communication are verified, especially when language, frailty or social barriers threaten completion.
02Mechanisms and patternsImportant relationships and how to distinguish them.
Solids-first progression with weight loss is a common obstructive cancer pattern, although liquid difficulty may appear when narrowing becomes advanced.
Haematemesis, melaena or iron-deficiency anaemia may be the first sign of an ulcerated oesophageal or gastric lesion.
Repeated vomiting and early satiety raise gastric outlet or proximal obstruction, dehydration and electrolyte loss.
Measured weight loss, anorexia and falling function increase concern but may also reflect reduced intake from benign narrowing.
Drooling and inability to swallow saliva indicate emergency obstruction regardless of the underlying histology.
A palpable upper-abdominal mass that is clinically consistent with gastric cancer warrants consideration of the suspected-cancer pathway. A mass thought to be enlarged liver or gall bladder follows its own NG12 imaging branch.
03Interpreting evidenceInformation, measurements and their limitations.
Consider the information, its meaning and its limitations before deciding what follows.
- 01
Suspected-cancer referral and urgent upper-GI endoscopy - Why
- Apply NG12 eligibility and inspect and biopsy the oesophagus and stomach.
- Interpretation and limitations
- Dysphagia is sufficient at any adult age; age 55 or over with weight loss plus upper-abdominal pain, reflux or dyspepsia is a separate referral trigger. Also consider suspected-cancer referral for an upper-abdominal mass consistent with gastric cancer. These outpatient criteria do not replace emergency assessment for secretion intolerance, unstable bleeding or perforation.
- 02
Full blood count and iron studies - Why
- Detect chronic bleeding and quantify anaemia before intervention.
- Interpretation and limitations
- Normal haemoglobin does not exclude cancer; microcytosis or low ferritin strengthens evidence of chronic loss and affects optimisation.
- 03
Renal profile and electrolytes - Why
- Measure dehydration and vomiting-related disturbance.
- Interpretation and limitations
- Hypokalaemia, alkalosis or acute kidney injury requires correction alongside investigation, not instead of diagnosis.
- 04
Cancer staging after tissue diagnosis - Why
- Map local and distant spread once invasive cancer is established.
- Interpretation and limitations
- Use the specialist sequence for the site and proposed treatment. A suspected T1 oesophageal adenocarcinoma is first staged by endoscopic resection, and an early gastric lesion suitable for endoscopic resection does not routinely need CT, EUS or PET-CT merely to prove superficial depth.
- 05
Nutrition assessment - Why
- Quantify loss of intake, weight and refeeding risk.
- Interpretation and limitations
- Early dietetic support and a safe route may be needed, but feeding access should not compromise the planned resection conduit.
- 06
Non-urgent direct-access upper-GI endoscopy - Why
- Identify the separate NG12 planned-investigation branch when emergency care or suspected-cancer referral is not indicated.
- Interpretation and limitations
- NG12 includes haematemesis, but assess any acute bleeding episode first rather than downgrading it to a routine appointment. At age 55 or over, consider this route for treatment-resistant dyspepsia; upper-abdominal pain with low haemoglobin; raised platelets with nausea, vomiting, weight loss, reflux, dyspepsia or upper-abdominal pain; or nausea/vomiting with weight loss, reflux, dyspepsia or upper-abdominal pain. Apply a coexisting suspected-cancer criterion when present and provide safety netting.
04Applied reasoningWorked examples connecting principles to decisions.
01Worked case: progressive dysphagiaComplete the urgent pathwayA 70-year-old has six weeks of solids-first dysphagia, an 8 kg measured weight loss and reduced oral intake, but can still swallow fluids and has stable observations.+
- 1Refer immediately on the suspected oesophago-gastric cancer pathway, document the continuing ability to drink and arrange dietetic support rather than delaying for an acid-suppression trial.
- 2Upper-GI endoscopy five days later identifies a tight ulcerated distal oesophageal lesion from 35 to 40 cm; the endoscopist records that it is not safely traversable and obtains eight viable biopsies from non-necrotic edges without dilating the malignant narrowing.
- 3Histology confirms adenocarcinoma and staging CT shows no distant metastasis, so the referral is transferred directly to the specialist oesophago-gastric MDT for radical assessment.
- 4Verify that the patient has received the result, is maintaining hydration on a modified liquid diet and has a named MDT appointment; repeat weight at review shows no further loss while staging is completed.
02Emergency conversionEscalate secretion intoleranceWhile awaiting endoscopy, the patient can no longer swallow saliva and becomes breathless.+
- 1Direct the patient to emergency hospital assessment and keep them nil by mouth.
- 2Protect the airway and obtain urgent therapeutic endoscopy and surgical input.
- 3Relieve obstruction or secure nutrition according to anatomy while avoiding blind tube passage.
- 4Confirm post-procedure respiratory status and the definitive diagnostic plan.
03Negative first examinationReconcile persistent alarm symptomsInitial endoscopy reports no obvious cancer but progressive dysphagia continues.+
- 1Check examination quality, landmarks, biopsies and whether the narrowing was traversed.
- 2Review histology and choose repeat expert endoscopy, contrast imaging or manometry according to the unresolved mechanism.
- 3Maintain nutrition and safety-net advice during the second-line investigation.
- 4Document the explanation that accounts for the progressive symptom before discharge from follow-up.
05Checking understandingVerify the reasoning, revisit uncertainties and apply feedback.
- Track referral date, endoscopy completion, biopsy result and MDT destination as separate events.
- Reweigh patients with obstructive symptoms and record hydration and tolerated texture.
- Escalate new secretion intolerance, bleeding, fever or severe chest pain immediately.
- Use professional interpretation and accessible information so consent and safety advice are understood.
- Reopen investigation if symptoms progress despite a reassuring or incomplete first test.
06Special situationsVariants, exceptions and circumstances that change the usual approach.
Age does not cancel dysphagia referral
NICE referral for dysphagia is symptom-led; a younger adult can still require urgent endoscopy.
Response to acid suppression is weak reassurance
Heartburn improvement can coexist with a fixed malignant or benign narrowing.
Nutrition is diagnostic context
Rapid loss may reflect both tumour biology and inability to eat, so measured trajectory informs urgency and optimisation.
Closed-loop care is clinical care
A referral without a reviewed result can leave a serious diagnosis unowned.
07Common pitfallsFrequent interpretation and management errors.
- 01
Repeating a PPI while progressive dysphagia worsens.
- 02
Treating inability to swallow saliva as a routine clinic problem.
- 03
Assuming a normal haemoglobin excludes an ulcerated upper-GI cancer.
- 04
Placing feeding access without considering the future gastric conduit or operative plan.