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There are usually no signs or symptoms in the early stages. Symptoms of lung cancer develop as the condition progresses.

The common symptoms of lung cancer include:

a cough that doesn’t go away after 2 or 3 weeks

a long-standing cough that gets worse

chest infections that keep coming back

coughing up blood

an ache or pain when breathing or coughing

difficulties at breathing

constant tiredness or lack of energy

loss of appetite or unexplained weight loss

If you have any of these, you should see a GP.

Less common symptoms of lung cancer include:
1: wheezing: breathing with a noisy voice.
2: constant pain in chest

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changes in the appearance of your fingers which is known as finger clubbing

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• Type of lung cancer
• The size and position
• The stage
• Overall health

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See a GP if you have symptoms of lung cancer, such as breathlessness or a persistent cough.

The GP will ask about your general health and your symptoms. They may examine you and ask you to breathe into a device called a spirometer, which measures how much air you breathe in and out.

You may be asked to have a blood test ,chest x ray CT scan bronchoscopy and biopsy  all of these   tests help diagnoses the disease

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Responsible for over 70% of cases

Cigarettes contain over 60 different carcinogenic chemicals

1. Damaging the DNA that controls a cell's normar growth and function

2. Distrupting the cell's ability to repair DNA damage

Weakens the body's immune system

Damages the airways and alveoli

Causes cancer all throughout the respiratory system

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Breathing in second-hand smoke

Increases the risk of lung cancer by 20~30%

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A colourless, odourless radioactive gas

Exists naturally in soil and is everywhere, but usually in low levels

Some buildings and areas have a higher radon level

Gets inhaled into the human body through the respiratory tract and it releases radioactive alpha particles which damage the lung tissues

Increases the probability when combined with smoking

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Asbestos, Uranium, Arsenic, Cadmium, Chromium, Nickel, Petroleum etc.

Some occupations tend to be more expesed to these chemicals than others (miners, construction workers, engineers etc.)

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A mix of tiny solid and liquid particles in the air

Made up of acids, organic chemicals, metals, soil and dust particles

Particles build up in the lungs and change how cells replicate which leads to DNA damage

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Genetic factors also may play a role in one's chances of developing lung cancer

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Youtube clip1

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Youtube clip1: (1) What is Lung Cancer? - YouTube

Image1:
https://www.verywellhealth.com/thmb/m62nCM-Fx996eYO-xlYEcjJHIEw=/614x0/filters:gifv(webm)/lung-cancer-symptoms-4014389_color-9405196b97064d509fe43ef1f8f14e2d.gif

Symptoms of lung cancer: https://www.verywellhealth.com/lung-cancer-symptoms-4014389

Image2: https://www.ctsu.ox.ac.uk/research/mortality-from-smoking-in-developed-countries-1950-2005-or-later/responsive_image?ratio=r16x9&scale=w760

Image 3:
https://www.indoor-air-health-advisor.com/images/radioactive.jpg

Image 4:
https://i.dailymail.co.uk/i/pix/2013/10/18/article-2465699-18BC5C2000000578-854_634x383.jpg

Image 5:
https://cdn1.sph.harvard.edu/wp-content/uploads/sites/56/2012/10/Genes.jpg

Causes of lung cancer:
NHS - Lung Cancer Causes
American Lung Association - What Causes Lung Cancer

American Lung Association - Outdoor Air Pollution

Cancer Research UK - How can air pollution cause cancer?
Medlineplus - Lung cancer genetics

Diagnosis of lung cancer:
Lung cancer - Diagnosis - NHS (www.nhs.uk)

Image 6: https://www.cdc.gov/cancer/lung/images/man-hospital-750.jpg?_=49532

Image 7: https://www.mayoclinic.org/-/media/kcms/gbs/patient-consumer/images/2013/11/15/17/37/ca00033_-ds00038_im04119_mcdc7_lungcancersurgerythu_jpg.jpg

Image 8:
https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.thetimes.co.uk%2Farticle%2Fcoronavirus-cancer-patients-at-risk-as-radiotherapy-machines-stand-idle-f5smbjmmr&psig=AOvVaw2qWluFrD6NGxZbNrwgShP7&ust=1647885879241000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCIC5n7mj1fYCFQAAAAAdAAAAABAD

Image 9:
https://cdn.cancercenter.com/-/media/ctca/images/others/blogs/2021/03-march/blog-chemotherapy-l.jpg?h=630&w=1200&hash=89410032FAD8CB68C5B8C42AA22675A7

Image 10:
https://upload.wikimedia.org/wikipedia/commons/thumb/2/21/Dendritic_cell_therapy.png/290px-Dendritic_cell_therapy.png

Image 11: https://www.cancer.gov/sites/g/files/xnrzdm211/files/styles/cgov_article/public/cgov_image/media_image/100/000/2/files/precision-medicine-infographic-piece-article.png?h=fbeb4613&itok=Wk8vy2QJ

Lung cancer treatment:
Lung cancer - Treatment - NHS (www.nhs.uk)

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Non-small-cell lung cancer

If you have non-small-cell lung cancer that's in only 1 of your lungs and you're in good general health, you'll probably have surgery to remove the cancerous cells. This may be followed by a course of chemotherapy to destroy any cancer cells that may have remained in your body.

Small-cell lung cancer

Small-cell lung cancer is usually treated with chemotherapy, either on its own or in combination with radiotherapy or immunotherapy. This can help to prolong life and relieve symptoms

• lobectomy
• pneumonectomy
• wedge resection or segmentectomy

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Radiotherapy uses pulses of radiation to destroy cancer cells. There are a number of ways it can be used to treat lung cancer.

• conventional external beam radiotherapy
• stereotactic radiotherapy
• internal radiotherapy

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Chemotherapy uses powerful cancer-killing medicine to treat cancer. There are several ways that chemotherapy can be used to treat lung cancer.

• given before surgery to shrink a tumor
• given after surgery to prevent the cancer turning
• used to relieve symptoms and slow the spread of cancer
• combined with radiotherapy

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Immunotherapy is a group of medicines that stimulate your immune system to target and kill cancer cells. It can be used on its own or combined with chemotherapy.

• a group of medicines that stimulate your immune system to target and kill cancer cells.
• It can be used on its own or combined with chemotherapy

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Targeted therapies

Medicines designed to slow the spread of advanced non-small cell lung cancer.