Lung Cancer — Types, Symptoms & When to See a Specialist

What is Lung Cancer?

Lung cancer occurs when cells in the lungs or the airways leading into them grow uncontrollably and form a tumour. The lungs sit deep within the chest, well protected by the ribs and the chest wall — which is part of why lung cancer often produces no symptoms until it is locally advanced. Most lung cancers begin in the cells lining the airways (the bronchi) or the small air sacs (alveoli), and they may grow silently for months before producing a persistent cough, a change in voice, breathlessness, or other warning signs.

Lung cancer is divided into two broad groups — non-small cell lung cancer (NSCLC), which accounts for around 85% of cases, and small cell lung cancer (SCLC), which accounts for the remaining 15%. The two are treated very differently. NSCLC includes several subtypes, the most common of which is adenocarcinoma — increasingly seen in non-smokers, particularly Indian women. The good news is that lung cancer treatment has been transformed over the past decade by molecular testing for targetable mutations (EGFR, ALK, ROS1, KRAS), modern immunotherapy and advanced surgical and radiation techniques. When found early, lung cancer is highly curable.

Types of Lung Cancer

Lung cancers are grouped by the cell type they arise from. The distinction matters enormously because treatment, response rates and prognosis differ widely.

For detailed information on diagnosis, molecular testing, minimally invasive lung surgery (VATS/RATS), advanced radiation therapy (SBRT), modern targeted therapy and immunotherapy options, see our dedicated page on lung cancer treatment in Hyderabad.

Common Signs & Symptoms of Lung Cancer

Lung cancer often produces no symptoms in its early stages. When symptoms do appear, the most important early signs are:

• A persistent cough lasting more than 3 weeks, or a change in the character of a chronic cough
• Coughing up blood or blood-stained sputum (haemoptysis)
• Persistent chest pain, especially with breathing or coughing
• Shortness of breath that has built up over weeks
• Recurrent chest infections that take longer than usual to clear
• Hoarseness of voice that does not settle in 2–3 weeks
• Unexplained weight loss and loss of appetite
• Persistent fatigue
• Difficulty swallowing if the cancer presses on the food pipe
• Bone pain (suggests spread to bones)
• Persistent headache, vision changes, or new seizures (suggests spread to the brain)
• Swelling of the face, neck or arm (a rare sign of pressure on a large chest vein)

Lung Cancer in Telangana & Andhra Pradesh

Lung cancer is the leading cause of cancer death in men across Telangana and Andhra Pradesh, and a rapidly rising cancer in women — including women who have never smoked. Several regional realities matter. Tobacco use in all forms — bidis, cigarettes, hookah, chillum — remains very common in men and is the dominant cause of male lung cancer. Indoor air pollution from biomass cooking fuels in rural areas, second-hand smoke in homes, and outdoor air pollution in Hyderabad and the Vizag industrial belt all contribute, particularly to the rise in non-smoking women.

A particular Indian and East Asian pattern stands out: a substantial proportion of lung adenocarcinomas in non-smoking women carry targetable mutations such as EGFR or ALK, which respond very well to oral targeted therapy. This makes molecular testing essential for every patient — and means that a never-smoker with a persistent cough or unexplained breathlessness deserves a chest X-ray and specialist evaluation, not reassurance based on smoking history alone.

Common Causes & Risk Factors

Lung cancer has multiple causes — and a growing share of cases now occur in people who have never smoked. Risk factors group into four broad categories.

When to See a Lung Cancer Specialist

Any of the following should prompt a chest X-ray or low-dose CT scan and specialist evaluation:

• A persistent cough lasting more than 3 weeks, or any change in a chronic cough
• Coughing up blood or blood-stained sputum, even once
• Persistent chest pain or shortness of breath
• Recurrent chest infections in the same part of the lung
• Hoarseness of voice lasting more than 2–3 weeks
• Unexplained weight loss, persistent fatigue, or loss of appetite
• An abnormal shadow or nodule found on a chest X-ray or CT scan
• A persistent cough in a never-smoker — particularly an Indian woman over 40 — that does not respond to standard treatment
• A long history of smoking or significant occupational dust/chemical exposure with any new respiratory symptom

A short specialist consultation and the right diagnostic test — imaging, endoscopy, biopsy, or blood test as appropriate — is usually enough to confirm or rule out cancer. Early action is always easier than catching up later.

Specialist Lung Cancer Care at CION Cancer Clinics

Our NABH-accredited centres across Hyderabad deliver evidence-based lung cancer care — from CT and PET-CT staging, bronchoscopy and EBUS-guided biopsy through to comprehensive molecular and immunohistochemistry testing, minimally invasive VATS and robotic lung surgery, advanced radiation therapy (IMRT/IGRT/SBRT), modern targeted therapy (EGFR, ALK, ROS1, BRAF, KRAS, MET inhibitors), and immunotherapy combinations for advanced disease — guided by NCCN and ESMO protocols and reviewed for every patient by a multidisciplinary thoracic-oncology tumour board.

For a detailed walk-through of lung cancer diagnosis, treatment options, costs, and our specialist team, see our dedicated page on lung cancer treatment in Hyderabad.

Early action makes lung cancer curable

A short specialist consultation and the right scan are usually enough to confirm or rule out cancer.