The most common histological type seen in branchogenic carcinoma is

.Adenocarcinoma is now the most common of the NSCLC types, having oveaken squamous cancer.The increasing incidence is paly due to an increasing incidence in women and may be the result, in pa, of a move towards lower-tar cigarettes that are inhaled more deeply to get the same effect. Reference:Bailey & Love's sho practise of surgery,25th edition,page no:884