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What You Need to Know about Lung Cancer Treatment in India


What is Lung Cancer

Lung cancer is an uncontrolled growth of abnormal cells in one or both the lungs. These abnormal cells disrupt the normal functioning of the lungs. As they grow these abnormal cells forms a tumor.

Tumors are of two types :

  • Benign tumors: They have localized growth. That is they can only cause problems if they put pressure on their nearby tissues.

  • Malignant tumors: Are the ones which invade the surrounding body tissues. These are the dangerous tumors & are formed when :

  • Invasion : In this the cancerous cell manages to move throughout the body via the blood or lymphatic systems, destroying healthy tissue

  • Angiogenesis: In this, the cell manages to divide and grow, making new blood vessels to feed itself.

Lung cancer is the most common cancer found worldwide. It is most common in men above the age of 60 years as compared to females



Lungs are a pair of large spongy, air-filled organs located on both side of the chest (thorax). The main function of the chest is the exchange of oxygen and carbon dioxide between the blood and air. Oxygen is very important for survival, so the lungs provide oxygen to the body and remove carbon dioxide.

Human Lungs


Lung cancer is classified as follows:


Risk Factors of Lung Cancer

There are many conditions that may lead to lung cancer,however, the top known causes are

Risk Factors of Lung Cancer



In the early stages, lung cancer usually has no signs and symptoms. Signs and symptoms of lung cancer is mostly seen when the diseases has reached an advanced stage.The symptoms and signs include:

  • Cough that does not goes away.

  • Change in cough-pay attention to any chronic cough or blood or more mucus than usual.

  • Breathing changes-shortness of breath during work or rest.

  • Pain in the chest area which can be sharp dull and constant or comes and goes.

  • Pain can also go to the shoulders or back.

  • A hoarse voice which persists for more than two weeks.

  • Wheezing or whistling sound when you breathe.

  • Drop in weight.

  • Bone pain –an indicator of metastasis. Worsens at night while resting at the back.


Signs and Symptoms of Lung Cancer



Diagnosis is based on

  • Detailed history

  • Physical examination

  • Laboratory investigations

Detailed history-it includes signs, symptoms and any associated risk factors

Physical examination-It includes complete clinical respiratory examination along with an examination of other systems.

Investigations-It includes:

  • Chest x-ray

  • Ct-scan

  • Sputum cytology

  • Biopsy


Know More:


Staging is the process of finding the location &extent of cancer, such as how large it is, if or where it has spread & whether it is affecting the other parts of the body. Knowing the stage of the cancer is important as this will help the doctor by:

  • Understand the severity of cancer and survival chances.

  • Plan the best treatment option accordingly.

  • Identify clinical trials that may be treated the options for the patients.



TNM (Tumor, Nodes, and Metastasized) staging system is the most preferred cancer staging system in use. Others systems are more specific to a particular type of cancer. Staging systems include information about:

  • Location of the tumor

  • Cell type (such as adenocarcinoma or squamous cell carcinoma)

  • Tumor size

  • Spread to nearby lymph nodes

  • Spread to different parts of the body

  • Tumor grade, which refers as to how abnormal the cancer cells look and how likely the tumor is to grow and spread

  • In situ: Presence of abnormal cells, which have not spread.

  • Localized: Cancer is limited to its origin place.

  • Regional: Cancer has spread to nearby lymph nodes, tissues, or organs.

  • Distant: Cancer has spread to distant parts of the body.



Is a process in which a tumor is able to successfully spread to the other parts of the body and grow there, invading and destroying the other healthy tissues. The resulting condition is a serious one & it is very difficult to treat.

The most common site of spread of cancer is:-

  • Regional lymph node

  • Liver

  • Bone

  • Brain

  • Adrenal

Stages of Lung Cancer



The treatment options for lung cancer depend on the type of lung cancer you have.

  • Small cell lung cancer: treated with chemotherapy because surgery cannot be done as the cancer is diagnosed when it has already spread

  • Non-small cell lung cancer: treated with surgery radiotherapy as well as chemotherapy or combination according to the stage of cancer

  • Surgery: if the cancer is in stage 1 and 2 and has not metastasized it is possible to cure by surgically removing the tumor and the lymph nodes. Surgery is carried by a thoracic margin and a negative margin of tissue is created around the tumor. Surgery can be curative or palliative. Surgery has side effects like pain and infection.

  • Chemotherapy: utilizes strong chemicals that interfere with cell divisions process damaging protein or DNA so that cancer cells will commit suicide. It is considered systemic because its medicine travels throughout the entire body killing the original tumor cells as well as cancer cells that have spread.

    • Also given as adjuvant therapy.

    • Several side effects-nausea and vomiting appetite loss, diarrhea, hair loss, infection bleeding, and mouth sores.

  • Radiation-high energy rays are focused on the tumor so that the tumor shrinks or destroys, the tumor high energy gamma rays are emitted from metals such as radium or special machine


Side effects:

  • Fatigue

  • Nausea

  • Loss of appetite

  • Hairless

  • Causes dry skin & irritation

  • Sensitivity on the skin surface





Stage Ia-Ib

Tumor localized in the lung

Surgical resection

Stage IIa IIb

Tumor spread to local lymph nodes

Surgical resection

Stage IIIa

Tumor spread to regional lymph nodes in trachea, chest

Chemotherapy followed by surgery or radiation

Stage IIIb

Tumor spread to contralateral lymph nodes

Combination of chemotherapy & radiation

Stage IV

Tumor metastasis to organs outside the chest

Chemotherapy & or palliative care



Progress in Lung Cancer Treatment



The most important prevention for lung cancer is to quit smoking

Lung Cancer Prevention


FREQUENTLY asked questions



Yes, lung cancer is fatal and the majority of the people die of lung cancer every year around the globe.



Lung cancer death is caused by tobacco mostly (80%). Even if it is a small number but it’s true that some people who don’t smoke can also develop lung cancer.


The x-ray can be used to detect cancer, but for confirmatory diagnosis, other investigations are also done.



If diagnosed at an early stage then the survival rate is -5 years If diagnosed in the late stage then the 5-year survival rate is 4%.


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Dr. Pooja Chaudhary Author Name
Dr. Pooja Chaudhary

Dr. Pooja Chaudhary is a well known health blogger. She writes for some of the well known medical sites in India and US.

This content meets Vaidam Editorial Policy and is reviewed by
Dr. Bhawana Mittal Reviewer Name
Dr. Bhawana Mittal

Dr. Bhawana Mittal has 7+ years of experience in managing patients and their medical queries. With a keen eye for detail and a deep-rooted passion for healthcare and wellness, she is dedicated to ensuring the accuracy and credibility of medical content. Her expertise spans across diverse medical domains, enabling her to review and refine the content on almost all diseases and conditions. 

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