2012, p 1960

Kreyberg Type I and II

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Formerly, cases of lung cancer were divided into two broad categories based on the relationship between smoking and lung cancer risk, Kreyberg type I and II. The Kreyberg type I lung cancer (smoking-related) included squamous cell carcinoma, large cell carcinoma and small cell carcinoma, while the Kreyberg type II lung cancer (less smoking-related or smoking-unrelated) included adenocarcinoma. Currently, the two main groups are small cell lung cancer (SCLC) and non-small cell lung cancer (NSCLC).