A multifactorial study (cell kinetics, cytogenetics, DNA content) of lung tumours: basic information for prognostic evaluation.

Different prognostic parameters (labeling index, chromosomal pattern, DNA content) were studied in 32 cases of lung tumour. A great variability was observed in the proliferative activity and karyotype, and there was a lack of correlation between these parameters and the histologic type. It was possible to demonstrate that a diploid DNA content does not necessarily correspond to a normal karyotype. A more precise evaluation of the prognostic significance of data obtained will be possible in correlation with an extensive follow-up of the patients studied.