Pulmonary Oncology

Pulmonary Oncology
Lung tumors may be
• Primary
• Metastatic from other sites in the body: which is the most common
Primary tumors of the lung may be Malignant or Benign
The most common lung cancer is non–small cell lung cancer.
The malignant classification:
1- Carcinoma:
Small cell lung cancer
Non-small cell lung cancer
2- Bronchial gland carcinoma
3- Carcinoid
4- Lymphoma
The benign :
1- Laryngotracheobronchial as adenoma ,hamartia & papilloma
2- Parenchymal as hamertoma , lipoma & fibroma

Lung Carcinoma
Etiology
1- Toxin exposure:
Cigarette smoking is the most important cause of lung cancer, accounting for about 85% of cases. The risk of cancer differs by age, smoking intensity, smoking duration & genetic susceptibility .The risk of lung cancer increases with combined exposure to toxins and cigarette smoking. Other confirmed or possible risk factors include air pollution, exposure to cigar smoke and second-hand cigarette smoke, and exposure to carcinogens (eg, asbestos, radiation, radon, arsenic & other chemicals).