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lung cancer.pptx
- 1. Lung cancer
- 3. Lung cancer Lung cancer can arise in any part of lung but 90-95% of cancers are in the epithelial cell which are pesent in the bronchioles . Lung cancer are the fourth most common cancer reported in the Indian males It account for 6.8% of all malignancies in india
- 4. definition Lung cancer also known as lung carcinoma/ bronchogenic carcinoma It is a malignant lung tumor characterized by uncontrolled cell growth in tissues of lung This growth can spread beyond the lung by the process of metastasis into nearly tissue or other part of body
- 5. Classification Lung cancer are broadly classified into two types 1. Small cell lung cancer 2. Non small cell lung cancer
- 7. Small cell lung cancer Sclc comprise about 15 -25% of lung cancer &is the most aggressive & rapidly growing of all lung cancer Associated with ciagreete smoking & expouse to environmental carcinogens They tend to spread easily via lymphatic & blood stream
- 8. It is frequently associated with endocrine disturbances predominantly central & can cause bronchial obstruction & pneumonia
- 9. Non small cell lung cancer Nsclc are the most common lung cancer accounting for about 80% of all lung cancer Nsclc can be divided into three main types that are named based upon type of cell found in the tumor 1. Adenocarcinoma 2. Squamous cell carcinoma 3. Large cell carcinoma
- 11. adenocarcinoma it has been associated with lung scarring & chronic interstitial fibrosis Most common type of carcinoma 40-50% occur in females Begins in mucous glandular tissue & mostly located in the peripheral portion of lung No clincal symptoms until metastasis Bronchioalveolar carcinoma is a type of adenocarcinoma
- 12. Squamous cell carcinoma Second most common carcinoma account for 30 – 35 % of lung cancer It is more common in men associate with ciagreete smoking Arise from bronchial epithelium of lung slow growing cancer mostly in central bronchi Usually show early symptoms due to blockage of bronchial tubes & nodules Does not metastaise rapidly