<bold>The aim of the study</bold> was to determine unfavourable prognostic factors for patients with stomach adenocarcinoma after their surgical treatment through evaluation of prognostic indicators for cellular ploidy and proliferative activity.
<bold>Material and methods.</bold> A group of 51 patients following surgical treatment due to stomach adenocarcinoma and discharged from our hospital between 1995-2000 were studied here. The material examined was encased in paraffin blocks. After histopathological verification, the tumour segments within these blocks were used for cytofluorometric analysis of DNA-ploidy according to Hedley's method.
<bold>Results.</bold> In 41 (80.4%) stomach cancer patients (out of the total group of 51 patients), diploid tumours were found. No significant relationship between DNA ploidy and sex, age, symptoms, inherited susceptibility to a disease, tumour magnitude, grade of histological malignancy, or grade of clinical progression was observed. Generally, after the stomach cancer operation, the probability of five-year survival was 22.1% for patients with diploid tumours (DI=1.0), and 20% for the patients with aneuploid tumours (DI ± 1.0). The probability of 10-year survival was 19.2% for diploid tumours, and 10% for aneuploid tumours. These differences were not statistically significant (p=0.255).
<bold>Conclusions.</bold> 1. Classical clinicopathologic factors are still the best prognostic criteria for the evaluation of long-term results of surgical treatment for stomach cancer patients. 2. Determination of DNA-ploidy and proliferative activity of stomach cancer did not decrease the gap between long-term results prognosis for surgical treatment and actual results.
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