How Is Lung Cancer Diagnosed? Tests and Screening Explained

Lung cancer, the second most common cancer worldwide and early detection is the only way to improve its outcomes; Unfortunately many patients are unaware of the disease are until it spreads to other body organs, and have limited treatment options. People who are at high risk of lung cancer must go for lung cancer screening from time to time. There are many tests available today to identify lung cancer even before the disease starts showing signs. Early and Timely diagnosis can help you to get the Best Lung Cancer Treatment in India at the right stage, significantly improving survival and quality of life. Dr. Arvind Kumar is among the leading chest and thoracic surgeons, offering expert care backed by extensive clinical experience of performing minimally invasive lung cancer surgeries

Lung cancer – an overview

Cancer is a disease that is characterized by uncontrolled cell growth in the body. When cancer develops in the lungs, it is termed as lung cancer. In some cases, it may also spread to other organs, such as the brain or lymph nodes. Cancers that originate elsewhere and spread to the lungs are referred to as metastatic cancers. Early detection is a vital step that can increase survival rates; it also enables timely lung cancer treatment, which in turn improves the effectiveness of the treatment plan.

What is lung cancer screening?

Lung cancer screening is a Low- Dose CT Scan (LDCT) performed for people who are at a risk of developing lung cancer. The doctor recommends the test for people who are at greater risk of developing lung cancer and for those who have not yet started experiencing the symptoms. The primary aim of lung cancer diagnosis is to identify cancer cell growth in the lungs at an early stage, so that survival rates and treatment efficiency can be improved. You must consider lung cancer screening if you are more prone to developing lung cancer because of age, family history, smoking habits, or other environmental factors. The factors which should be considered for LDCT includes: –

• Age – people aged between 50 and 80 years with a smoking history. The age reflects a greater chance of developing cancer due to prolonged exposure to risk factors.
• Heavy smoker – If you have been a heavy smoker for many years, a doctor will evaluate your smoking history, which is measured in years, and is calculated as the number of packs of cigarettes you smoked daily, which is multiplied by the years you have smoked.
• Family history- If you are someone with a family history of lung cancer, then there is a possibility that you might also have a genetic predisposition.
• High-risk groups – If you come under high-risk groups of people, such as current and former smokers. People with exposure to secondhand smoke and occupational exposure to carcinogens.

Screening decisions are not just made based on age or smoking history, but some health issues and personal history can also influence the recommendation, such as personal health history, if you have chronic respiratory conditions, etc.

Importance of early detection for lung cancer

Lung cancer is a silent killer, and there will be no ringing bell, and you may not even realize it is. This is why doctors recommend lung cancer screening for early detection, which is the best weapon that you will have to prevent yourself from future complications. It is said to be a game-changer as detecting lung cancer early before it spreads, damages , the body However, there are many lung cancer symptoms that you must keep a check on and should not avoid :

• Persistent Cough – Cough that doesn’t go away.
• Blood in the Sputum
• Mild chest pain
• Nagging cough
• Breathlessness during a walk
• Wheezing or hoarseness

With low-dose CT scans for lung cancer screening, small lung tumors can be detected even before symptoms appear. Early detection increases the 20-year survival rate to 80%, allows for timely lung cancer treatment, and reduces the risk of death. Regular lung cancer screening in India is especially recommended for people at high risk due to smoking, age, family history, or environmental exposure.

By combining awareness of early lung cancer symptoms with regular screening and early diagnosis, patients can access the best lung cancer treatment in India, improve survival outcomes, and take proactive steps to protect their lung health.

With low-dose CT scans for lung cancer screening, small lung tumors can be detected even before symptoms appear. Early detection increases the 20-year survival rate to 80%, allows for timely lung cancer treatment, and reduces the risk of death. Regular lung cancer screening in India is especially recommended for people at high risk due to smoking, age, family history, or environmental exposure.

By combining awareness of early lung cancer symptoms with regular screening and early diagnosis, patients can access the best lung cancer treatment in India, improve survival outcomes, and take proactive steps to protect their lung health.

How is lung cancer diagnosed?

Lung cancer is considered the most life-threatening cancer, and early detection plays a vital part in improving the overall survival rates and the best lung cancer treatment in Delhi. If you are concerned about how lung cancer is diagnosed and which tests doctors recommend. Below is the list of tests and scans recommended for better diagnosis of lung cancer :

1. Imaging tests for Lung Cancer :

• Chest X-Ray

It is also recommended that the first test performed to diagnose cancer in the lungs is. In many cases, lung tumors appear on X-ray as a white or grey mass. A chest X-ray cannot give a perfect diagnosis because it cannot differentiate between cancer and other conditions, like a lung abscess.

• CT Scan

It is the first imaging test performed when cancer is suspected, providing detailed cross-sectional images of the lungs and helping diagnose lung diseases and abnormal growths or nodules. These scan tests are vital for detecting tumors too small to be seen on standard X-rays. It also reveals the size, shape, and position of tumors, helping determine whether cancer has spread to other tissues in the lungs.

• PET scan

The surgeon recommends a PET scan to detect active cancer cells in the lungs and elsewhere in the body. The doctor might also inject radioactive sugar into the bloodstream, and cancer cells absorb it more than normal cells, which helps light them up during the scan. The tests helped to stage the lung cancer and also to check how much the cancer has spread to the lymph nodes or distant organs.

2. Biopsy and Laboratory Tests

• Biopsy

The cancer surgeon may recommend a biopsy to confirm the presence of cancer in the lungs. The doctor performs the biopsy, collecting tissue samples from the patient for examination under a microscope. Many types of biopsies and tests help to diagnose cancer in the lungs, including:

• Needle biopsy or CT-guided

It helps guide and analyze the lung during the procedure by inserting a scope through the chest wall into the lungs, and a tissue sample is collected for diagnosis.

• Bronchoscopy

It is a minimally invasive technique that assists the doctor’s team in checking inside the airways and lungs. A thin tube, called a bronchoscope, equipped with a light and a camera, is used to diagnose, evaluate, and, in some cases, treat conditions affecting the lungs, throat, and trachea.

• Thoracoscopy

It is done to analyze and diagnose lung and other chest organ issues. The doctor will collect samples of lung tissue or lymph nodes using a thoracoscope, a thin camera with a light to view the diaphragm, esophagus, and chest wall, and other chest areas.

Biopsies, along with other tests, help lung cancer specialists to evaluate the type of cancer, whether small cell lung cancer or non-small cell lung cancer, and their aggressiveness as well.

3. Molecular testing

It is also done after the lung cancer is confirmed, especially non-small cell lung cancer. The tissue sample is collected for genetic or molecular testing to guide target or immunotherapy. Molecular testing identifies genetic mutations such as KRAS, EGFR, ALK, and ROS1.

Consult the best chest and thoracic surgeon in Delhi

A lung cancer diagnosis is the combination of treatments, including biopsy, imaging, blood tests, etc. These are the best diagnostic tools that help confirm the presence of cancer, its stage, and extent, and ultimately assist in developing a personalized treatment plan. Consult Dr Arvind Kumar, one of the top chest and thoracic surgeons in Delhi, offering many surgical and non-surgical lung cancer treatments.

The surgical procedures for lung cancer offered are lobectomy, pneumonectomy, wedge resection, and video-assisted thoracoscopic surgery. He is among the top surgeons in India with many years of experience. Whether you are dealing with a new diagnosis or looking for help and support, consult Dr Arvind Kumar for help and to get the best lung cancer treatment in India. He has been working for years to address people and their families physically, emotionally, and psychologically, with his comprehensive lung cancer program.