DNA STUDIES IN THE PROGNOSIS OF COLORECTA L-CANCER - RETROSPECTIVE ANALYSIS IN 34 PATIENTS

Objective We study the tumoral DNA as a pronostic factor in patients o perated for colo-rectal cancer. Design: Retrospective. We analize by f low cythometry the DNA content of tumoral tissue: Ploidy, DNA Index, P roliferative Index, S Phase. Patients. 34 operated patients, for colo- rectal cancer, whit a minimum 3 years of follow-up. Results. Ploidy do esn't show any relation whit other pronostic factors. Only Dukes C ane uploid patients had more positive nodes than diploid. Ploidy was not r elated to better evolution or survival. Neither DNA Index, Proliferati ve Index and S Phase were related to the evolution of the disease. Con clusions.- The DNA study by flow cythometry has no better pronostic va lue then other classical factors.