Lung Cancer: Causes, Symptoms, Stages, Treatment and Cost in India

Lung cancer is the leading cause of cancer death worldwide and one of the most commonly diagnosed cancers in both men and women. It is strongly linked to smoking, but a significant number of people who develop lung cancer have never smoked. Because early lung cancer often causes few symptoms, many patients are diagnosed at an advanced stage. However, treatment has changed dramatically in recent years. Targeted therapies, immunotherapy, minimally invasive surgery and precise radiotherapy techniques now help many patients live longer and with a better quality of life, and early-stage lung cancer can often be cured. India's leading cancer hospitals offer this full range of advanced treatment at a fraction of Western costs.

What is Lung Cancer?

Lung cancer begins when cells in the lining of the airways or lung tissue grow out of control and form a tumour. It can spread to lymph nodes and other organs such as the brain, bones, liver and adrenal glands.

Types of lung cancer

• Non-small cell lung cancer (NSCLC): the most common type, making up the large majority of cases. Its main subtypes are adenocarcinoma (the most common, and the type most often seen in non-smokers and women), squamous cell carcinoma and large cell carcinoma.
• Small cell lung cancer (SCLC): a faster-growing type, strongly linked to smoking, that usually spreads early and is mainly treated with chemotherapy, radiotherapy and immunotherapy.
• Other tumours: carcinoid tumours and mesothelioma (cancer of the lining of the lung, linked to asbestos).

Stages of lung cancer

• Stage I: a small tumour confined to the lung.
• Stage II: a larger tumour or spread to nearby lymph nodes.
• Stage III: locally advanced, with spread to lymph nodes in the centre of the chest or to nearby structures.
• Stage IV: metastatic, with spread to the other lung, the lining of the lung or distant organs.

Small cell lung cancer is also often described as limited-stage or extensive-stage.

Causes and Risk Factors

• Tobacco smoking: the most important cause, including cigarettes, bidis, cigars and waterpipe (shisha/hookah) smoking, which is common in the Middle East and increasingly among young people elsewhere. A single shisha session can involve inhaling large amounts of smoke.
• Second-hand smoke.
• Indoor air pollution: cooking with wood, coal, dung or kerosene in poorly ventilated homes, common in rural Africa and South Asia, increases lung cancer risk, especially in women.
• Outdoor air pollution in large cities.
• Radon gas, asbestos, silica, diesel exhaust and other occupational exposures, including mining.
• Previous lung disease such as tuberculosis scarring and COPD; tuberculosis is common in many of our patients' home countries, and lung cancer can sometimes be mistaken for TB, delaying diagnosis.
• Family history and genetic factors.
• Previous radiation therapy to the chest.

Symptoms of Lung Cancer

• A cough that does not go away or a change in a long-standing cough
• Coughing up blood
• Shortness of breath or wheezing
• Chest pain that worsens with deep breathing or coughing
• Hoarseness of voice
• Repeated chest infections such as pneumonia or bronchitis
• Unexplained weight loss, loss of appetite and tiredness
• Bone pain, headaches or seizures if cancer has spread
• Clubbing of the fingertips

Warning signs needing urgent care

Seek emergency care for heavy coughing of blood, severe breathlessness, swelling of the face, neck and arms (superior vena cava obstruction), sudden weakness or numbness in the limbs, back pain with leg weakness or loss of bladder control (possible spinal cord compression), or confusion. If a "TB" diagnosis is not improving with treatment, ask your doctor whether lung cancer has been ruled out.

Diagnosis of Lung Cancer

• Chest X-ray and contrast CT scan of the chest.
• Low-dose CT screening for high-risk people, such as long-term heavy smokers, which can detect cancer at an early stage.
• PET-CT scan to assess spread throughout the body.
• MRI of the brain to check for brain metastases.
• Biopsy: CT-guided needle biopsy, bronchoscopy, endobronchial ultrasound (EBUS) to sample lymph nodes, or surgical biopsy. Fluid from around the lung may also be tested.
• Molecular (biomarker) testing: essential for NSCLC, especially adenocarcinoma. Tests look for changes in genes such as EGFR, ALK, ROS1, KRAS, BRAF, MET, RET and NTRK, and for PD-L1 levels. Liquid biopsy (blood test) may also be used.
• Lung function tests to assess fitness for surgery or radiotherapy.

Accurate staging and biomarker testing are the foundation of a personalised treatment plan, and should be done before starting treatment whenever possible.

Treatment Options for Lung Cancer

Treatment is decided by a multidisciplinary tumour board, including thoracic surgeons, medical oncologists, radiation oncologists and pulmonologists, based on the type, stage, biomarker results and general health of the patient.

Surgery

For early-stage NSCLC, surgery offers the best chance of cure. Options include lobectomy (removal of a lobe), segmentectomy or wedge resection for small tumours, sleeve resection and pneumonectomy. Many Indian hospitals perform these through video-assisted thoracoscopic surgery (VATS) or robotic surgery, with smaller incisions, less pain and faster recovery.

Radiation therapy

• Stereotactic body radiotherapy (SBRT/SABR) for small, early tumours in patients who cannot have surgery, delivered in a few sessions. CyberKnife radiosurgery can track tumours as they move with breathing.
• IMRT/IGRT and VMAT combined with chemotherapy for stage III disease.
• Stereotactic radiosurgery for brain metastases.
• Proton therapy in selected cases to reduce dose to the heart and healthy lung; see proton beam therapy in India.

Chemotherapy

Chemotherapy may be given before surgery (neoadjuvant), after surgery (adjuvant), with radiotherapy, or as the main treatment for advanced disease, often in combination with immunotherapy.

Targeted therapy

Patients whose tumours have specific gene changes may receive targeted tablets, such as EGFR inhibitors (for example osimertinib), ALK inhibitors (for example alectinib or lorlatinib) and other drugs for ROS1, BRAF, MET, RET and KRAS G12C changes. These can control the disease for long periods with fewer side effects than chemotherapy. Quality generic versions of several targeted drugs are available in India at much lower cost.

Immunotherapy

Immune checkpoint inhibitors such as pembrolizumab, nivolumab, atezolizumab and durvalumab help the immune system attack cancer cells. They are used in advanced disease, after chemoradiation in stage III and, increasingly, around surgery in earlier stages.

Interventional and supportive care

Bronchoscopic procedures, airway stents, pleural drainage and palliative care help control symptoms and improve quality of life. For complete information on packages, see lung cancer treatment in India.

Cost of Lung Cancer Treatment in India

Lung cancer treatment at JCI and NABH accredited cancer centres in Delhi/NCR costs significantly less than in the USA, UK or Gulf countries. Indicative starting prices are:

These are starting estimates. The final cost depends on the stage and type of cancer, biomarker results, the treatment plan, the number of cycles, the drugs chosen and the hospital. Contact Satyug Healthcare at +91-8860606766 / +91-9910655125 (WhatsApp) for a free medical opinion and cost estimate.

Recovery, Living with Lung Cancer and Prevention

After lung surgery, most patients stay in hospital for about 4 to 7 days and return to normal activities within a few weeks. Breathing exercises and pulmonary rehabilitation help recovery. During treatment and afterwards:

• Stop smoking completely; it improves treatment results and reduces complications.
• Eat a nourishing diet and stay as active as possible.
• Report side effects early, especially fever during chemotherapy or new cough, breathlessness or rashes during immunotherapy.
• Attend regular follow-up scans as advised.
• Seek emotional support and palliative care for symptom control when needed.

Prevention: avoid all forms of tobacco, including shisha and chewing products, reduce exposure to indoor smoke by using cleaner fuels and good ventilation, use protective equipment at work and ask your doctor about low-dose CT screening if you are a long-term heavy smoker.

Why Choose India for Lung Cancer Treatment?

• Multidisciplinary tumour boards at leading cancer hospitals with experienced thoracic surgeons and oncologists.
• Advanced technology including PET-CT, EBUS, robotic surgery, CyberKnife, TrueBeam and proton therapy.
• Access to the latest targeted therapies and immunotherapies, including affordable Indian generics.
• Comprehensive molecular testing.
• Treatment costs a fraction of those in Western countries, with no waiting lists.

Step-by-Step Process to Travel to India for Treatment

1. Share your reports - send your latest reports, scans/CD, angiography or echo films and passport copy to Satyug Healthcare on WhatsApp (+91-8860606766 / +91-9910655125) or email.
2. Free medical opinion & cost estimate - within 24-72 hours we share opinions and written cost estimates from 2-3 JCI/NABH-accredited hospitals and specialists.
3. Choose hospital & doctor - compare doctor experience, hospital, room category and total cost; we help you decide with no extra charge.
4. Visa Invitation Letter (VIL) - the hospital issues a VIL for the patient and up to two attendants; we arrange it within 24-48 hours.
5. Apply for Indian e-Medical Visa - apply online for the e-Medical Visa (patient) and e-Medical Attendant Visa (family) using the VIL; most approvals come in 3-5 working days.
6. Book flights & accommodation - we suggest flights and arrange a guest house, service apartment or hotel near the hospital to suit your budget.
7. Free airport pickup - our representative receives you at the airport and takes you to your hotel or directly to the hospital.
8. Hospital admission & treatment - a dedicated coordinator and language interpreter stay with you for registration, tests, doctor consultations, the procedure and billing.
9. Discharge & follow-up - you receive the discharge summary, prescriptions and fitness-to-fly certificate; follow-up checks are done before you fly.
10. Return home & tele-follow-up - we arrange airport drop and stay connected for online follow-up consultations with your doctor in India.

Frequently Asked Questions

Can lung cancer be cured?

Early-stage lung cancer can often be cured with surgery or stereotactic radiotherapy. Advanced lung cancer is usually not curable, but targeted therapy and immunotherapy can control it for long periods, sometimes years, with good quality of life.

Can non-smokers get lung cancer?

Yes. A significant proportion of lung cancer patients have never smoked, especially women and people exposed to air pollution, cooking smoke, radon or second-hand smoke. These cancers more often have gene changes that respond to targeted therapy.

Why is molecular testing important?

Testing for gene changes such as EGFR and ALK, and for PD-L1, tells doctors whether targeted tablets or immunotherapy are likely to work. This can change the treatment completely and improve outcomes.

How long should I stay in India for lung cancer treatment?

Diagnosis and staging usually take 5 to 7 days. After lung surgery, patients typically stay 2 to 3 weeks. Chemotherapy and immunotherapy courses may require longer stays or repeat visits, and some treatment can be continued at home under coordination with your local doctor.

Is lung surgery safe for older patients?

Age alone does not rule out surgery. Fitness is assessed with lung function and heart tests. For patients who cannot have surgery, SBRT/CyberKnife is an effective alternative for early tumours.

Can my lung cancer have been misdiagnosed as tuberculosis?

It can happen, because both diseases can look similar on chest X-rays. If symptoms do not improve on TB treatment, a CT scan and biopsy should be done to rule out cancer.

Are Indian generic cancer drugs effective?

Generic and biosimilar drugs approved by Indian regulators contain the same active ingredient and are widely used in major Indian hospitals, substantially reducing the cost of long-term treatment.

Disclaimer: This article is for general information only and is not a substitute for a consultation with a qualified doctor.