Oesophageal Cancer Flashcards
How common is oesophageal cancer in the UK, compared to other cancers?
It is the 9th most common cancer in the UK
Describe the age distribution of oesophageal cancer
There are very few cases below the age of 45, and the incidence increases eightfold between 45-54, and 65-74 years
Describe the gender distribution of oesophageal cancer
It has a sevenfold higher incidence in men than women
How much more common is oesophageal cancer in China compared to the UK?
20-30 times more common
What are the most common histological types of oesophageal cancers?
- Adenocarcinoma
- Squamous cell carcinoma
What proportion of oesophageal cancers are adenocarcinomas?
1/3
Where are adenocarcinomas of the oesophagus found?
They are mostly found in the distal oesophagus
What proportion of oesophageal cancers are squamous cell carcinomas?
2/3
What % of oesophageal squamous cell carcinomas are found in the upper oesophagus?
15%
What % of oesophageal squamous cell carcinoma are found in the mid-oesophagus?
45%
What % of oesophageal squamous cell carcinomas are found in the lower oesophagus?
40%
What is squamous cell cancer of the oesophagus associated with?
Chronic irritation
What can cause chronic irritation of the oesophagus?
- Alcohol
- Caustic injury
- Radiotherapy
- Achalasia
What other conditions are associated with squamous cell cancers of the oesophagus?
- Plummer-Vinson syndrome
- Chronic iron deficiency
- Dysphagia
What are the features of Plummer-Vinson syndrome?
- Sideroblastic anaemia
- Glossitis
- Oesophagitis
In which population in particular do other conditions cause squamous cell cancers of the oesophagus?
Impoverished populations
What genetic trait carries an increased risk of squamous cell carcinomas of the oesophagus?
Hereditary tylosis
What is the inheritance pattern of hereditary tylosis?
Autosomal dominant
What does hereditary tylosis cause?
Palmar-plantar hyperkeratosis
What risk of squamous cell carcinoma of the oesophagus does hereditary tylosis carry?
95% risk by the age of 70
What is adenocarcinoma of the oesophagus associated with?
- Gastro-oesophageal reflux
- Hiatus hernia
- Obesity
- Frequent antacid or histamine H2 receptor blocker use
What % of patients with reflux does Barrett’s oesophagus develop in?
8%
What does Barrett’s oesophagus lead to?
Metaplasia of the normal squamous epithelium of the lower oesophagus to columnar epithelium, which may be dysplastic
What is the annual transformation of Barrett’s oesophagus to adenocarcinoma?
0.5%
What shift has there been in oesophageal cancer in recent years?
From squamous to adenocarcinoma
What does the shift from squamous to adenocarcinoma oesophageal cancers perhaps reflect?
Changing patterns of smoking, obesity, and nutrition of patients
What are the rare types of oesophageal cancer?
- Small cell carcinoma
- Mucoepidermoid carcinoma
- Sarcoma
- Adenoid cystic carcinoma
- Primary lymphoma
What is the most common presenting complaint of oesophageal cancer?
Dysphagia
What might dysphagia be associated with in oesophageal cancer?
- Weight loss
- Haematemesis
What are the features of the dysphagia in oesophageal cancer?
- Can deteriorate rapidly over a period of weeks to months
- Typically progressive in nature
- Worse for solids than liquids
What are the other symptoms of oesophageal cancer?
- Dyspepsia
- Dyspnoea
- Odynophagia
- Iron deficiency anaemia
What level of weight loss is associated with a worse outcome in oesophageal cancer?
> 10% total body weight
What can be caused by invasion of oesophageal cancer into adjacent anatomical structures?
Oesophageal fistula
What can be caused by an oesophageal fistula?
- Recurrent pneumonia
- Aspiration pneumonia
What are common features of oesophageal cancer that is advanced at presentation?
- Left supraclavicular lymphadenopathy (Virchow’s node)
- Hepatomegaly
- Pleural effusion
What might happen if an oesophageal tumour invades the thoracic aorta?
Rapid exsanguination
Is involvement of the pericardium common in oesophageal cancer?
No, it is uncommon
What can involvement of the pericardium cause in oesophageal cancer?
- Arrhythmias
- Pericardial effusion
What might hoarseness be a sign of in oesophageal cancer?
Phrenic nerve involvement
What might hiccups be a sign of in oesophageal cancer?
Phrenic nerve involvement
How can bone involvement in oesophageal cancer be identified?
- Pain
- Hypercalcaemia
What should be looked for on examination of the face in oesophageal cancer?
- Conjunctival pallor
- Jaundice
- Glossitis
What may glossitis be a sign of in oesophageal cancer?
Plummer-Vinson syndrome
What lymph nodes should be assessed in oesophageal cancer?
- Neck (cervical)
- Supraclavicular (Virchow’s)
- Axillary
What symptoms should be asked about in oesophageal cancer?
- Retrosternal pain
- Vomiting
What should be looked for on examination of the hands in oesophageal cancer?
- Pallor
- Palmar hyperkeratosis
- Kolinonychia
What might palmar hyperkeratosis be a sign of in oesophageal cancer?
Hereditary tylosis
What might koilionychia be a sign of in oesophageal cancer?
Plummer-Vinson syndrome
What should be looked for on peripheral examination in oesophageal cancer?
Plantar hyperkeratosis
What may plantar hyperkeratosis be a sign of in oesophageal cancer?
Hereditary tylosis
What should be looked for on cardiovascular examination in oesophageal cancer?
- Atrial fibillation
- Pericardial effusion
What should be looked for on respiratory examination in oesophageal cancer?
- Hoarseness
- Hiccups
- Aspiration pneumonia
- Pleural effusion
- Signs of infection, e.g. productive cough, fever, rigors
What should be looked for on abdominal examination in oesophageal cancer?
- Epigastric pain
- Mass in epigastrum
- Abdominal distention
- Ascites
- Hepatomegaly
- Splenomegaly
- Features of chronic liver disease
What should be looked for on neurological examination in oesophageal cancer?
Confusion
What should be looked for on observation in oesophageal cancer?
- Dyspnoea
- Cachexia
- Dehydration
- Dysphagia
- Odynophagia
- Dyspepsia
- Anorexia
How is a diagnosis of oesophageal cancer usually diagnosed?
Upper GI endoscopy and biopsy
What is an alternative investigation for patients that cannot tolerate upper GI endoscopy in oesophageal cancer?
Barium studies
What is the problem with barium studies in oesophageal cancer?
Cannot do biopsy
When might laparoscopy be useful in oesophageal cancer?
For distal tumours
What is the advantage of endoscopic ultrasound in oesophageal cancer?
It is very accurate in determining the depth of invasion
What is the disadvantage of endoscopic ultrasound in oesophageal cancer?
It is less accurate in determining nodal involvement
What CT imaging is required in oesophageal cancer?
Of the chest, abdomen, and pelvis
What is CT imaging required for in oesophageal cancer?
- Staging the disease
- Determining extent of spread and involvement of lymph nodes
What is PET-CT used for in oesophageal cancer?
Increasingly being used before surgery to determine the extent of disease and operability
What might bronchoscopy be required for in oesophageal cancer?
To detect tracheal invasion
When should bone scan imaging be done in oesophageal cancer?
If the patient complaints of bone pain or has hypercalcaemia at presentation
What is the treatment of choice for early stage oesophageal cancer?
Surgical resection, sometimes with neoadjuvant chemotherapy or chemoradiation
What agents are used for neoadjuvant chemotherapy in early stage oesophageal cancer?
- Cisplatin, carboplatin, or oxaliplatin
- Fluorouracil
- Epirubicin
What is the problem with surgery in oesophageal cancer?
Many patients have precluding surgical co-morbidities such that <40% of patients are suitable for resection with oesophagectomy
What is the operative mortality of surgery for oesophageal cancer?
5-10%
What are the complications of surgery for oesophageal cancer?
- Anastomotic leakage
- Strictures
- Reflux
- Motility problems
How good is adjuvant chemotherapy for oesophageal cancer?
The role and benefit of adjuvant chemotherapy is unclear
What % of oesophageal cancer patients have advanced disease at diagnosis?
25%
What might those with small volume inoperable oesophageal cancer be considered for?
Chemoradiation with curative intent
What are the risks of chemoradiation with curative intent for oesophageal cancer?
- Oesophageal perforation or stricture
- Pneumonitis
- Pulmonary fibrosis
How are the majority of patients with locally advanced oesophageal cancer treated?
- Stent insertion
- Palliative radiotherapy
What is the point of stent insertion for locally advanced oesophageal cancer?
Manage dysphagia
What is the point of palliative radiotherapy for locally advanced oesophageal cancer?
Manage pain or bleeding
What % of patients with oesophageal cancer present with metastatic disease?
35%
How are patients with metastatic oesophageal cancer treated?
Symptomatically, or with palliative combination chemotherapy if sufficiently fit
What might some patients with metastatic oesophageal cancer be considered for?
Palliative radiotherapy with brachytherapy
What can restore the oesophageal lumen and relieve dysphagia in oesophageal cancer?
Laser treatment and stent insertion
What does the survival of oesophageal cancer correlate with?
Stage at presentation
What is the 5 year survival for patients with in situ oesophageal cancer?
> 95%
What is the 5 year survival for patients with local oesophageal cancer?
30-80%
What is the 5 year survival for patients with oesophageal cancer with nodal involvement at presentation?
10-30%
What is the 5 year survival rate for patients with metastatic oesophageal cancer?
<2%
What % of patients with oesophageal cancer are suitable for surgical resection?
Approx 25%
What is the 5 year survival rate of patients with oesophageal cancer that are suitable for surgical resection?
25%
What is the overall 5 year survival of oesophageal cancer in the UK?
8%
What could half of all oesophageal cancer be prevented by?
Education about;
- Smoking cessation
- Drinking less alcohol
- Improving diet with more fresh fruit and vegetables
- Reducing poorly preserved and high salt foods
What is required for patients with Barrett’s oesophagus?
Endoscopic surveillance every 2-5 years
What management is required for low-grade oesophageal dysplasia?
PPI therapy
What management is required for high-grade oesophageal dysplasia?
Surgical resection
What is Tx in oesophageal cancer?
The primary tumour cannot be evaluated
What is T0 in oesophageal cancer?
There is no evidence of a primary tumour in the oesophagus
What is Tis in oesophageal cancer?
Carcinoma in situ
What is T1 in oesophageal cancer?
Tumour invading into the lamina propria/submucosa
What is T2 in oesophageal cancer?
Tumour invading into the muscularis propria
What is T3 in oesophageal cancer?
Tumour has penetrated into the adventitia
What is T4a in oesophageal cancer?
Tumour has invaded into the pleura, the pericardium, or the diaphragm
What is T4b in oesophageal cancer?
Tumour has spread into other nearby structures, such as the trachea, vertebrae, or the aorta
What is Nx in oesophageal cancer?
Regional lymph nodes cannot be evaluated
What is N0 in oesophageal cancer?
No regional lymphadenopathy
What is N1 in oesophageal cancer?
Regional lymph node involvement (one or two lymph nodes)
What is N2 in oesophageal cancer?
Regional lymph node involvement (three to six lymph nodes)
What is N3 in oesophageal cancer?
Regional lymph node involvement (seven or more lymph nodes)
What is Mx in oesophageal cancer?
Distant metastasis cannot be evaluated
What is M0 in oesophageal cancer?
No distant metastasis
What is M1 in oesophageal cancer?
Distant metastasis