Lung Cancer

Dr. Rajib Bhattacharjee – Leading Medical Oncologist in Kolkata

What is Lung Cancer?

Lung cancer occurs when abnormal cells in the lungs grow uncontrollably, forming tumors that interfere with normal breathing and oxygen exchange. It is one of the most common cancers worldwide and can occur in both smokers and non-smokers. Early detection through screening and prompt treatment can significantly improve survival and quality of life.
Lung cancers are broadly classified into:
Non–Small Cell Lung Cancer (NSCLC): The most common type, including adenocarcinoma, squamous cell carcinoma, and large cell carcinoma.
Small Cell Lung Cancer (SCLC): A more aggressive type that spreads quickly but often responds well to chemotherapy and radiation initially.

Common Signs & Symptoms


In its early stages, lung cancer may not cause noticeable symptoms. As it progresses, common signs include:

  • Persistent cough or change in a chronic cough
  • Coughing up blood or rust-colored sputum
  • Chest pain that worsens with deep breathing or coughing
  • Shortness of breath or wheezing
  • Hoarseness or voice changes
  • Unexplained weight loss and fatigue
  • Recurrent chest infections such as pneumonia or bronchitis

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    Diagnostic Procedures & Evaluation

    At Dr. Rajib Bhattacharjee’s Oncology Unit, diagnosis and staging of lung cancer involve advanced imaging, laboratory tests, and molecular profiling for precision treatment planning.

    Comprehensive Diagnostic Steps Include:

    Clinical Evaluation & History: Assessing risk factors, symptoms, and overall health.

    Imaging Tests: Chest X-ray, CT scan, PET-CT, or MRI to locate and stage the tumor.

    Bronchoscopy or CT-Guided Biopsy: To collect tissue samples for confirmation.

    Molecular Testing & Biomarker Analysis: EGFR, ALK, ROS1, KRAS, and PD-L1 testing to identify targeted therapy options.

    Pulmonary Function Tests: To assess lung capacity and guide treatment decisions.

    Treatment Options Offered by Dr. Rajib Bhattacharjee

    Dr. Bhattacharjee provides individualized, evidence-based treatment tailored to the cancer stage, molecular subtype, and patient health profile.

    1. Chemotherapy
    Uses cancer-fighting drugs to destroy tumor cells or prevent their spread. Often used in combination with radiation or targeted therapies.
    2. Targeted Therapy
    Precision medicines that attack specific gene mutations or proteins (e.g., EGFR, ALK, ROS1) responsible for cancer growth — leading to better outcomes with fewer side effects.
    3. Immunotherapy
    Boosts the body’s immune system to recognize and destroy cancer cells, particularly effective in advanced or metastatic lung cancers.
    4. Radiation Therapy
    Focused high-energy rays to destroy cancer cells, often combined with chemotherapy for locally advanced disease.
    5. Neoadjuvant & Adjuvant Therapy
    Chemotherapy, targeted, or immunotherapy given before (neoadjuvant) or after (adjuvant) surgery to enhance treatment effectiveness and reduce recurrence.
    6. Supportive & Palliative Care
    Comprehensive pain management, nutrition guidance, and emotional support to maintain comfort and quality of life at every stage.

    Why Choose Dr. Rajib Bhattacharjee for Lung Cancer Care?

    1. Expert in Thoracic Oncology: Specialized in treating both early-stage and advanced lung cancers with global-standard protocols.

    2. Precision Medicine Approach: Utilizes molecular profiling for targeted and immunotherapy-based treatments.

    3. Multidisciplinary Collaboration: Works closely with pulmonologists, thoracic surgeons, and radiation oncologists for complete care.

    4. Personalized Treatment Plans: Each patient receives an individualized therapy plan based on tumor biology, stage, and overall health.

    5. Compassionate, Continuous Support: Focused on holistic well-being — from diagnosis to recovery and survivorship.

    6. Advanced Care Infrastructure: Treatments delivered at Peerless Hospital, equipped with state-of-the-art oncology and imaging facilities.