A quick guide to lung cancer: Your questions answered

Written by: Dr Enson Thomas
Published: | Updated: 01/07/2024
Edited by: Conor Dunworth

Lung cancer is a significant health concern worldwide, affecting millions of individuals each year. In this comprehensive guide, consultant respiratory physician Dr Enson Thomas explains some of the nuances of lung cancer, addressing common questions and concerns that patients may have.

 

How long can you have lung cancer without knowing?

Lung cancer often develops silently, with symptoms manifesting only in later stages. It's not uncommon for individuals to have lung cancer for years without noticing any signs. The duration varies greatly depending on factors such as the type of cancer, its location, and the individual's overall health. Regular screenings and awareness of risk factors can aid in early detection and improve outcomes.

 

What are the symptoms of lung cancer?

Symptoms of lung cancer may include:

  • persistent coughing
  • chest pain
  • shortness of breath
  • coughing up blood
  • fatigue
  • unexplained weight loss
  • recurrent respiratory infections.

 

However, it's important to note that these symptoms can mimic other less serious conditions, which may lead to delayed diagnosis.

 

What are the causes of lung cancer?

Smoking is the leading cause of lung cancer, responsible for the majority of cases. Exposure to second-hand smoke, radon gas, asbestos, and other carcinogens also increases the risk. Additionally, genetics and family history play a role in predisposing some individuals to lung cancer.

 

How quickly does lung cancer spread?

The rate of lung cancer progression varies depending on factors such as the type and stage of cancer, as well as individual health factors. Lung cancer can spread to nearby tissues, lymph nodes, and other organs in the body. Early detection and timely treatment are crucial in preventing further spread and improving prognosis.

 

What treatments are available for lung cancer?

Treatment options for lung cancer depend on the type, stage, and overall health of the patient. They may include:

  • surgery
  • chemotherapy
  • radiation therapy
  • targeted therapy
  • immunotherapy
  • a combination of approaches

 

The goal of treatment is to remove or destroy cancer cells while minimising side effects and preserving quality of life.

 

How long can you live with lung cancer?

The prognosis for lung cancer varies widely and depends on factors such as the stage at diagnosis, the type of cancer, treatment received, and overall health of the patient. Early-stage lung cancer generally has a better prognosis than advanced-stage cancer. With advances in treatment and early detection efforts, survival rates for lung cancer have improved in recent years.

 

What can you do to reduce your risk of lung cancer?

  • Quit smoking: If you smoke, quitting is the single most effective way to reduce your risk of lung cancer.
  • Avoid second-hand smoke: Limit exposure to second-hand smoke, both at home and in public spaces.
  • Test for radon: Test your home for radon gas, a known carcinogen that can seep into buildings from the ground.
  • Protect against asbestos: Take precautions if you work in environments where asbestos exposure is possible, and follow safety guidelines.
  • Maintain a healthy lifestyle: Eat a balanced diet, exercise regularly, and attend routine medical check-ups to maintain overall health.

 

 

Lung cancer is a complex disease with various factors influencing its development, progression, and treatment outcomes. Early detection through screenings and awareness of risk factors can significantly impact prognosis. By understanding the symptoms, causes, and treatment options for lung cancer, patients can make informed decisions about their health and well-being.

 

 

Dr Enson Thomas is a renowned consultant respiratory physician based in Bedford, Northampton, Milton Keynes & London. If you would like to book a consultation with Dr Thomas, you can do so today via his Top Doctors profile.

By Dr Enson Thomas
Pulmonology & respiratory medicine

Dr Enson Thomas is a highly accomplished consultant respiratory physician with private clinics in London, Northampton, Milton Keynes, and Bedford.
 
His specialities include asthma, sleep disorders, long COVID and lung cancer, as well as treating all aspects of respiratory medicine including cough, breathlessness, chest pain, bronchiectasis, pleural disorders, fibrotic lung diseases, allergic respiratory disorders, and COVID-19 infection.  Dr Thomas works alongside a multidisciplinary team including thoracic surgeons, lung oncologists, specialist nurses and physiotherapists. Investigations offered include lung function studies, CT imaging, pleural ultrasound alongside sleep studies and CPAP titration, bronchoscopy and endobronchial ultrasound (EBUS).

Dr Thomas, who treats both adults and children from the age of three, privately practices at the following facilities:

In Bedford - BMI The Manor Hospital and Bridges clinic,
In Northampton - BMI Three Shires Hospital
In Milton Keynes - BMI Saxon clinic
In London – 1 and 9 Harley Street clinics.
 
Dr Thomas graduated from the University of Calicut, India, in 1989. In 1994 he was awarded an MD from the University of Delhi, India, for his study on ‘Pulmonary Functions During Sleep in Patients of COPD (chronic obstructive pulmonary disease)'. He has been involved in other studies since, and has served as Principal Investigator for several large, multicentre, multinational clinical trials. Most recently, this includes the COVID-19 Recovery Trial funded by the University of Oxford. Following his education in India, he completed specialty training in the Leeds Deanery in the UK and began practicing as a consultant respiratory physician in 2002. 
 
During his tenure at Bedford Hospital Dr Thomas was the clinical lead for respiratory service and lead clinician for COVID-19, Lung Cancer, Respiratory Physiology, Ventilation, and Interventional Pulmonology and was responsible for developing a number of facilities at the hospital, including lung function laboratory, respiratory HDU, pleural ultrasound and interventional pulmonology (including EBUS).
 
He was instrumental in setting up the COVID-19 management and the COVID Virtual Ward during the most recent pandemic. 
 
In addition, he has long been involved in teaching and training, serving as educational supervisor and an award-winning Undergraduate Specialty Tutor in Medicine for Cambridge medical students. He also teaches on many lung conditions including asthma, COPD and lung cancer. Furthermore, his research has been published in various peer-reviewed journals.  

View Profile

Overall assessment of their patients


  • Related procedures
  • Depression
    Sleep disorders
    Snoring
    Rhinitis
    Obstructive sleep apnea
    Restless legs syndrome
    Autoimmune diseases
    Atypical pneumonia
    Asthma
    Methacholine challenge test
    This website uses our own and third-party Cookies to compile information with the aim of improving our services, to show you advertising related to your preferences as well analysing your browsing habits. You can change your settings HERE.