📋 Key Information Summary
- Oesophageal carcinoma comprises two main histological subtypes: squamous cell carcinoma (SCC), arising predominantly in the upper two-thirds, and adenocarcinoma (AC), arising at the gastro-oesophageal junction (GOJ) and distal oesophagus.
- Australia has approximately 1,800 new oesophageal cancer diagnoses annually; 5-year survival remains below 25%, largely because most patients present with advanced disease.
- Key modifiable risk factors include tobacco smoking, heavy alcohol use (SCC), chronic gastro-oesophageal reflux disease and Barrett's oesophagus (AC), and obesity.
- Non-modifiable risk factors include male sex, increasing age (>60 years), and inherited predisposition (tylosis palmaris, Fanconi anaemia).
- Presenting features include progressive dysphagia, unintentional weight loss, odynophagia, and iron-deficiency anaemia; alarm symptoms warrant urgent endoscopy within 2 weeks.
- Diagnosis requires upper GI endoscopy with tissue biopsy; staging includes CT chest/abdomen/pelvis, PET-CT, and endoscopic ultrasound (EUS) ± laparoscopy.
- The AJCC/UICC TNM 8th edition staging system is standard; staging is clinical (cTNM) followed by pathological (pTNM) post-surgery.
- For locally advanced resectable disease (cT2–T4a, N+), neoadjuvant chemoradiotherapy (CROSS regimen) or peri-operative chemotherapy (FLOT) followed by oesophagectomy is standard of care.
- Surgical resection (transhiatal or transthoracic oesophagectomy) should be performed at high-volume centres (>20 resections/year) to optimise outcomes.
- Definitive concurrent chemoradiotherapy (dCRT) is offered for unresectable disease or medically inoperable patients.
- Metastatic disease is managed with palliative systemic therapy (platinum/fluoropyrimidine backbone ± immunotherapy with nivolumab or pembrolizumab) and supportive care.
- Aboriginal and Torres Strait Islander peoples have higher incidence and poorer outcomes; culturally safe, multidisciplinary care pathways are essential.
- All patients should be discussed at a multidisciplinary team (MDT) meeting involving upper GI surgery, medical oncology, radiation oncology, gastroenterology, radiology, pathology, dietetics, and palliative care.
Introduction & Australian Epidemiology
Oesophageal carcinoma is an aggressive malignancy of the oesophageal epithelium or submucosal glands. It encompasses two principal histological subtypes: squamous cell carcinoma (SCC), which arises from the squamous mucosa of the upper and middle oesophagus, and adenocarcinoma (AC), which arises from metaplastic columnar epithelium (Barrett's oesophagus) at the gastro-oesophageal junction (GOJ) and distal oesophagus. Both subtypes carry a poor overall prognosis, with a combined 5-year survival rate of approximately 20–25% in Australia.
According to the Australian Institute of Health and Welfare (AIHW), there were an estimated 1,831 new cases of oesophageal cancer in Australia in 2023, with a male predominance (male-to-female ratio approximately 3:1). The age-standardised incidence rate is around 6.5 per 100,000 for males and 2.1 per 100,000 for females. Adenocarcinoma now accounts for approximately 60–65% of all oesophageal cancers in Australia, reflecting the rising prevalence of obesity and gastro-oesophageal reflux disease (GORD).
Oesophageal cancer is the seventh most common cause of cancer-related death in Australian men and the twelfth in women. Mortality remains high because the majority of patients present with locally advanced or metastatic disease, as the oesophagus lacks a serosal barrier, facilitating early local invasion, and symptoms such as dysphagia typically develop only once the luminal diameter is significantly narrowed.
Epidemiology & Risk Factors
Squamous Cell Carcinoma (SCC)
SCC of the oesophagus predominates in the upper and middle thirds. It remains the most common histological subtype globally but has declined in incidence in Australia. Key risk factors include:
- Tobacco smoking: Dose-dependent relationship; risk increases 5-fold in heavy smokers (>20 pack-years).
- Heavy alcohol consumption: Synergistic effect with smoking; combined risk multiplication of 30–50-fold.
- Nutritional deficiency: Diets low in fresh fruit and vegetables (folate, vitamin C, carotenoids).
- Caustic injury: Prior lye ingestion (lye strictures carry a 1,000-fold risk).
- Human papillomavirus (HPV): Especially HPV-16 and HPV-18; stronger association in East Asian populations.
- Achalasia: Chronic stasis and inflammation; risk rises after 15–20 years of disease.
Adenocarcinoma (AC)
AC typically arises at the GOJ (Siewert types I, II, III) and distal oesophagus. Its incidence has risen dramatically in Australia over the past four decades. Key risk factors include:
- Barrett's oesophagus: The single strongest risk factor; annual progression rate to AC is approximately 0.5% per year. Risk correlates with segment length (long-segment >3 cm carries higher risk).
- Chronic GORD: Frequent reflux symptoms (>3 times/week) increase risk 5–7-fold.
- Obesity: BMI >30 kg/m² increases risk 2–3-fold, particularly central (abdominal) obesity; promotes reflux and adipokine-driven inflammation.
- Tobacco smoking: Doubles the risk of AC; however, the association is weaker than for SCC.
- Male sex: Male-to-female ratio of approximately 6:1 for AC, likely related to oestrogen's protective effects and differences in fat distribution.
- Medications: Prior oesophageal sclerotherapy, H. pylori (paradoxically protective via reducing gastric acid), and NSAIDs (inconsistent data).
Pathology & Staging
Histological Classification
| Feature | Squamous Cell Carcinoma | Adenocarcinoma |
|---|---|---|
| Location | Upper and middle thirds | Distal oesophagus / GOJ |
| Precursor lesion | Squamous dysplasia | Barrett's oesophagus (intestinal metaplasia) |
| Molecular features | TP53, CDKN2A, NFE2L2 mutations; high PD-L1 expression in some | TP53, CDKN2A, SMAD4, ARID1A; ERBB2 (HER2) amplification in ~20% |
| Differentiation | Well, moderate, or poorly differentiated | Intestinal-type or diffuse-type (signet ring) |
| Australian proportion | ~35–40% | ~60–65% |
AJCC/UICC TNM Staging (8th Edition)
| T Stage | Description |
|---|---|
| Tis | High-grade dysplasia / carcinoma in situ |
| T1 | Tumour invades lamina propria (T1a) or submucosa (T1b) |
| T2 | Tumour invades muscularis propria |
| T3 | Tumour invades adventitia |
| T4a | Tumour invades pleura, pericardium, diaphragm, or peritoneum (resectable) |
| T4b | Tumour invades aorta, vertebra, trachea, or other unresectable structures |
| N Stage | Description |
|---|---|
| N0 | No regional lymph node metastases |
| N1 | 1–2 regional lymph node metastases |
| N2 | 3–6 regional lymph node metastases |
| N3 | ≥7 regional lymph node metastases |
| M Stage | Description |
|---|---|
| M0 | No distant metastasis |
| M1 | Distant metastasis present (liver, lungs, bones, peritoneum, non-regional nodes) |
Siewert Classification (Gastro-Oesophageal Junction)
- Type I: Tumour centre 1–5 cm above the GOJ (distal oesophageal AC). Managed as oesophageal cancer.
- Type II: Tumour centre 1 cm above to 2 cm below the GOJ (true cardia AC). Managed variably — often as oesophageal cancer in Australia.
- Type III: Tumour centre 2–5 cm below the GOJ (subcardial). Managed as gastric cancer.
Clinical Features & Investigations
Clinical Presentation
Symptoms of oesophageal carcinoma typically develop insidiously and are often present only when the disease is locally advanced or metastatic. The most common presenting features in Australian practice include:
- Progressive dysphagia: Initially to solids, then to semi-solids and liquids — the hallmark symptom (present in 70–90% at diagnosis).
- Odynophagia: Painful swallowing, particularly with hot or acidic foods.
- Unintentional weight loss: Often >5% body weight over 3 months; associated with cachexia and poorer prognosis.
- Iron-deficiency anaemia: Chronic occult blood loss, particularly in AC.
- Retrosternal chest pain or discomfort: May mimic cardiac chest pain.
- Hoarseness: Suggestive of recurrent laryngeal nerve involvement (T4a disease).
- Chronic cough or aspiration pneumonia: Due to tracheo-oesophageal fistula (rare, advanced).
Investigations
Treatment
All patients with oesophageal carcinoma should be discussed at a specialist multidisciplinary team (MDT) meeting prior to treatment commencement. The MDT should include upper GI surgical oncology, medical oncology, radiation oncology, gastroenterology, diagnostic and interventional radiology, anatomical pathology, dietetics, speech pathology, palliative care, and clinical nurse coordination.
Early Stage Disease (cTis, T1a — Endoscopic Resection)
For mucosal (Tis/T1a) disease without lymphovascular invasion, endoscopic resection is the preferred curative approach:
Locally Advanced Resectable Disease (cT1b–T4a, N0/+)
For patients with locally advanced disease who are surgical candidates, multimodality treatment is standard of care.
Option A: Neoadjuvant Chemoradiotherapy (CROSS Regimen) — Preferred for SCC
Option B: Peri-operative Chemotherapy (FLOT Regimen) — Preferred for AC / GOJ
Surgical Resection (Oesophagectomy)
Surgery remains the cornerstone of curative treatment for locally advanced oesophageal cancer. The procedure should be performed at high-volume centres (≥20 resections per year), as surgical volume is a strong predictor of peri-operative morbidity and mortality.
| Approach | Description | Indications |
|---|---|---|
| Ivor Lewis (Two-stage) | Laparotomy + right thoracotomy; gastric conduit with intrathoracic anastomosis | Most common approach in Australia for mid/distal tumours |
| McKeown (Three-stage) | Right thoracotomy + laparotomy + cervical incision; cervical anastomosis | Upper oesophageal tumours; higher anastomotic leak but lower mediastinitis risk |
| Transhiatal | Blunt dissection via abdomen and neck without thoracotomy; cervical anastomosis | Selected distal tumours; less pulmonary morbidity |
| Minimally Invasive Oesophagectomy (MIO) | Thoracoscopic + laparoscopic approach | Increasingly adopted at Australian high-volume centres; reduced pulmonary complications (TIME trial) |
Peri-operative outcomes at Australian centres: In-hospital mortality 2–4% at high-volume centres; anastomotic leak rate 5–10%; pulmonary complications 15–20%. Enhanced Recovery After Surgery (ERAS) protocols are recommended by ANZGOSA.
Definitive Chemoradiotherapy (dCRT)
For patients with unresectable disease (T4b) or who are medically inoperable, definitive concurrent chemoradiotherapy is the standard of care:
Metastatic Disease (Stage IV) — Systemic Therapy
Palliative systemic therapy aims to prolong survival, maintain quality of life, and manage symptoms such as dysphagia. Treatment is guided by HER2 status, PD-L1 CPS, and MSI status.
First-Line Therapy
Second-Line Therapy
Supportive & Palliative Interventions
- Oesophageal stenting: Self-expanding metal stent (SEMS) placement for malignant dysphagia — provides rapid symptom relief. Covered stents preferred to reduce tumour ingrowth.
- Enteral nutrition: Percutaneous endoscopic gastrostomy (PEG) or jejunostomy (PEJ) feeding tubes for patients unable to maintain oral intake. PEG placement should be deferred if surgery is planned (contamination risk).
- Photodynamic therapy (PDT): For palliation of obstructive symptoms; less commonly used in Australia.
- Palliative radiotherapy: External beam RT (30 Gy in 10 fractions) for bleeding or pain control.
- Symptom management: Opioids for pain, antiemetics, anxiolytics, and early palliative care referral per ASCO guidelines.
Special Populations
Aboriginal and Torres Strait Islander Health Considerations
📚 References
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