Lung cancer

Lung cancer arises from the cells of the respiratory epithelium They are broadly divided into 2 categories - Small cell lung cancer ( SLCL ) which is highly malignant tumour of the cells exhibiting neuroendocrine characteristics and accounts for 15 % of lung cancer cases Non-small cell lung cancer ( NSCLC ) constitute the majority ( 85 % ) of cases and are further subdivided into 3 groups - adenocarcinoma , squamous cell carcinoma and large cell carcinoma

How common - 2nd most common cancer by diagnosis by gender behind prostate and breast cancer Commoner in men ( 60 % ) but commonest cause of cancer death in both sexes Rare under age of 40 and people who have never smoked Majority in people over 65 with highest incidence between 80-84 yrs and lowest in people less than 40 In the US lung cancer accounts for 14 % of new cancers in men and 13 % in women In the UK lung cancer is the 3rd most common cancer accounting for 13 % of all new cancer cases and it is the most common cause of cancer death responsible for 21 % of all cancer deaths in 2017 ( Cancer...