[Prognostication of risk in surgical treatment of space-occupying formations of the liver].

From practice in the surgical management of 230 space-occupying formations of the liver (100 hepatic resections among other operations) a practical method for quantitative appraisal of the degree of the operative risk was elaborated. The method takes into account the relationship between the risk factors of various significance by multiplying the estimated probability of an unfavourable outcome in each of these factors, which is expressed as a risk multiplication coefficient determined for each of the 34 risk factors defined by the author. The factor of minimal and increased risk, unremovable and potentially removable, were determined. The suggested method allows the probability of an unfavourable outcome to be predicted on an individual basis and the therapeutic tactics to be reasonably changed in each specific case.