BRONCHOGENIC CARCINOMA or lung cancer

BRONCHOGENIC CARCINOMA :

A number of benign and malignant tumours occur in the lungs but the primary lung cancer, commonly termed bronchogenic carcinoma, is the most common. The lung is also the commonest site for metastasis from carcinomas and sarcomas. A histologic classification of various benign and malignant tumours of lungs as recommended by the World Health Organisation

It is the most common primary malignant tumour in men inindustrialised nations and accounts for nearly one-third of all cancer deaths in both sexes. Currently, the incidence in females in the United States has already exceeded breast cancer as a cause of death in women. Cancer of the lung is a disease of middle and late life with peak incidence in 5th to 7th decades, after which there is gradual fall in its incidence.

ETIOPATHOGENESIS

1. Smoking
2. Atmospheric pollution
3. Occupational causes
4. Dietary factors
5. Genetic factors
6. Chronic Scarring