Lung cancer explained: What you should know?

One of the most prevalent cancers in the world, lung cancer is still a significant public health concern. However, thanks to scientific innovations, new diagnostic methods, precision medicine, and advances in treatment technology, the landscape of lung cancer has changed significantly. Many people today live longer and enjoy a better quality of life thanks to advanced, personalized treatment methods offered by dedicated Cancer Centers of Excellence.

This review covers lung cancer, including its causes, symptoms, diagnosis, and various treatment methods using modern technologies and approaches to cancer care.

What is Lung Cancer?

When abnormal cells start growing in the lungs out of control, the person develops lung cancer that might eventually lead to cancer growth in other organs. Abnormal lung cancer cells might disrupt the work of the lungs and thus become a serious health issue requiring medical intervention.

The lungs are vital organs that help supply the blood with oxygen and release excess carbon dioxide. Lung cancer affects their function and negatively impacts the quality of the patient's life.

What are the various types of Lung Cancer?

These are the two primary types of lung cancer:

NSCLC, or non-small cell lung cancer:

The most common kind of lung cancer, accounting for 85% of all cases, is non-small cell lung cancer (NSCLC). The many forms of NSCLC include:

• Adenocarcinoma
• Squamous cell carcinoma
• Large cell carcinoma

It takes time to develop, unlike small-cell lung cancer, which usually progresses fast and responds well to surgical removal. Alternatively, it may be cured using radiation therapy, targeted therapy, or immunotherapy.

Small Cell Lung Cancer (SCLC):

It accounts for about 10%-15% of all lung cancer types. Small-cell lung cancer requires systemic treatment with chemotherapy or immunotherapy because it grows and spreads more quickly than non-small-cell lung cancer.

What are the Causes of Lung Cancer?

Some factors increase the risk of lung cancer.

Tobacco use: Small-cell lung cancer requires systemic treatment with chemotherapy or immunotherapy because, compared to non-small cell lung cancer, it develops and spreads faster.

Secondhand Smoke: Secondhand smoke can increase lung cancer risks.

Environmental and Occupational Risk Factors: Some environmental factors that can lead to lung cancer include:

• Radon gas
• Asbestos
• Silica
• Diesel exhaust
• Air pollution
• Industrial chemicals

Family History & Genetics

Individuals who have a family history of lung cancer may be at a greater risk, especially in combination with external factors.

Past Medical Condition

Past chronic diseases and/or past exposure to the chest region by radiation are some factors that can result in cancer development.

What are the Signs & Symptoms of Lung Cancer?

In its earlier stages, lung cancer does not show any symptoms. However, as it develops, individuals with this condition might exhibit the following signs:

• Cough
• Coughing up blood
• Chest pain
• Breathing difficulties
• Wheezing
• Hoarseness
• Loss of weight without an apparent reason
• Tiredness
• Recurrent chest infections

At an advanced stage, lung cancer can affect other parts of the body if it starts to metastasize.

All people who have breathing problems should consult a doctor immediately.

How is Lung Cancer Diagnosed?

Accurate and quick diagnosis is important for successful treatment outcomes.

Clinical Evaluation

This procedure is based on assessing patient's symptoms, risk factors, and overall state.

Tests & Imaging Studies

Sophisticated imaging techniques help detect any abnormal growth in the lungs.

They might include:

• Chest X-ray
• CT Scan
• PET-CT Scan
• MRI Scan

For this purpose, a PET-CT scan is considered to be highly effective.

Bronchoscopy

The bronchoscope is used to inspect the airways and obtain a tissue sample.

Biopsy

To confirm the diagnosis, tissue is examined under a microscope during a biopsy.

Molecular and Genetic Testing

The use of genetic markers in modern medicine is becoming increasingly important, as they enable the identification of genetic mutations that can be effectively treated with targeted therapy.

How is Lung Cancer Staged?

Lung cancer staging refers to determining the severity of the disease, which is necessary to plan the most efficient treatment.

Types of cancer stages:

• Stage I: The cancer remains localized in the lung.
• Stage II: The cancer affects not only the lungs but also the adjacent parts of the body and/or lymph nodes.
• Stage III: The cancer grows within the chest cavity.
• Stage IV: The cancer spreads far away from the primary site (to the liver, bones, brain, or adrenal glands).

What are the Treatment options for Lung Cancer?

Lung cancer treatment is usually based on multiple criteria, including:

• The type of cancer
• The stage of disease development
• Genetic features
• Patient's overall state of health
• Treatment goals

Surgery

Surgery is usually considered a viable option in cases of early lung cancer.

Surgical interventions may include:

• Wedge resection
• Segmentectomy
• Lobectomy
• Pneumonectomy

A minimally invasive approach to surgery can help shorten recovery periods and minimize pain experienced by patients.

Radiation Therapy

Radiation therapy utilizes high-energy radiation to kill cancerous cells without affecting surrounding healthy cells.

Radiation therapy can be applied:

• As a stand-alone treatment
• Before surgery
• After surgery
• As palliative treatment when cancer is advanced

Chemotherapy

Chemotherapy includes the use of anti-cancer medications to kill cancerous cells.

Chemotherapy may be applied:

• Before surgery
• After surgery
• Combined with radiation therapy
• In the condition of advanced/metastatic lung cancer

Targeted Therapy

Targeted therapy involves treating specific molecules in cancer cells, thereby causing their malignant changes.

Patients with genetic mutations in EGFR, ALK, ROS1, BRAF, MET, RET, or KRAS may be eligible for specialized treatments.

Immunotherapy

Immunotherapy boosts patients' immune response, enabling them to identify and kill cancer cells.

In many cases of advanced lung cancer, the application of immunotherapy helps improve patient survival rates.

How does Modern Technology Change Lung Cancer Treatment?

Continuous innovations in medicine help oncologists detect lung cancer, plan treatment, and personalize it as needed.

Advanced Diagnostic and Imaging Techniques

Accurate tumor identification and staging are ensured by very precise imaging equipment.

Advantages consist of:

• Early detection of cancer
• Precise treatment planning
• Improved evaluation of treatment response
• Efficient disease monitoring

PET-CT Modality

The PET-CT imaging modality enables doctors to detect cancer activity in various parts of the patient’s body.

This modality is used for detecting:

• Location of the tumor
• Cancer progression
• Treatment efficacy
• Tumor recurrence

Robotic-Assisted Surgery

The use of robotic surgical equipment ensures better control and improved precision in complex lung procedures.

Possible advantages can be listed as follows:

• Minimal invasive surgery
• Minimal blood loss
• Minimal stay in the hospital
• Fast recovery
• Accuracy of surgical operation

Precision Oncology and Genomic Testing

Genetic tests provide an in-depth molecular assessment to identify the specific mutations responsible for the cancer.

Strengths:

• Personalized treatment plan
• Better therapeutic outcomes
• Avoidance of unnecessary treatments

Image-Guided Radiation Therapy (IGRT)

The use of advanced imaging during radiation therapy improves the targeting of the affected areas.

Benefits include:

• Improved accuracy
• Minimal damage to healthy tissues
• Increased safety

Intensity-Modulated Radiation Therapy (IMRT)

IMRT enables the radiation dose to be tailored to the tumor contours.

Stereotactic Body Radiation Therapy (SBRT)

The SBRT technology involves highly localized, high-dose radiation delivered in fewer treatment sessions.

Patients who might not be suitable candidates for surgical treatments benefit most from this therapy.

Use of Artificial Intelligence in Oncology

Artificial intelligence technologies play an ever-growing role in providing cancer care by means of:

• Imaging
• Risk assessment
• Treatment planning
• Predictive modeling
• Personalized medicine

New developments in AI-assisted technologies further improve the effectiveness of cancer care.

What is a Specialized Cancer Center of Excellence?

Cancer Centers of Excellence denote a holistic model of cancer care that integrates various aspects of care, including specialized medical personnel, advanced equipment, scientific research, and other support services.

Why Choose a Cancer Center of Excellence for Lung Cancer Treatment?

Expert Multidisciplinary Care

At Cancer Centers of Excellence, patients get access to a highly qualified group of specialists, such as:

• Medical oncologists
• Surgical oncologists
• Radiation oncologists
• Pulmonologists
• Pathologists
• Radiologists
• Thoracic surgeons
• Oncology nurses
• Rehabilitation specialists

A collective body of experts evaluates each particular case.

Personalized Treatment Planning

No two lung cancer patients are alike.

The course of treatment will be tailored in accordance with:

• Tumor biology
• Cancer staging
• Clinical presentation
• Preferential choices of patients

Access to High-Tech Tools

Centers of Excellence in Oncology have access to state-of-the-art technology in order to achieve better patient outcomes.

Supportive Care

Care for cancer patients involves much more than the actual treatment itself.

The following support measures might be available:

• Nutrition support services
• Pain control
• Psychological assistance
• Lung function restoration
• Programs for survivors
• End-of-life care services

Clinical Research

Engaging in scientific studies provides the patient with advanced and experimental treatment options.

Is it possible to prevent Lung Cancer?

Although not all lung cancer cases are preventable, some steps can minimize the risk.

Do Not Smoke: The best prevention method is quitting smoking.

Protect Yourself from Environmental Factors: Minimizing exposure to carcinogens can help reduce the risk of lung cancer.

Undergo Periodic Screening Exams: People at high risk should consult their physicians about screening.

Live a Healthy Life: Wellness practices include eating healthy, exercising regularly, and living a healthy life.

Why is early Detection Significant for lung cancer?

Early detection is likely to yield better treatment outcomes than in the late stages of lung cancer development.

It can be recommended for patients with a high level of risk, including long-time and former smokers.

Advantages associated with early detection are the following:

• Treatment at an earlier stage
• The ability to have more treatment opportunities
• Higher chances of survival
• Better quality of life

What is the future outlook for advanced lung cancer therapies?

There is still much progress in the field of lung cancer treatment, owing to the scientific achievements and innovations in medicine and technology. These developments include precision medicine, immunotherapy, genomic analysis, robotic surgery, improved radiation therapy methods, and artificial intelligence applications in healthcare.

The provision of special services by the Lung Cancer Center, located in a Cancer Center of Excellence, is made possible by expertise, technology, and professionalism. The goal of this approach is to ensure that treatment is efficient and improves quality of life.

To seek an Expert Consultation for Lung Cancer Treatment in Lucknow, India:

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