Of 144 patients treated with T.P.N. in the period 1-5-1987/30-9-1988, 128 have been to have an operation. Their survival at the time of the removal, the post-operating mortality, the average stay in hospital, have been compared with those of other 128 patients non-treated with T.P.N., suffering from similar pathologies and who had operation of the same kind. The obtained results have stressed in the patients treated with T.P.N. as in those who had not, a survival at the time of the removal of 75% contrary to 62.5%, a post-operating mortality of 25% contrary to 37.5%, an average post-operative stay in hospital of 13 days contrary to 15 days. The statistical elaboration executed with chi 2's test with Yates' correction, provided 0.25 less than P greater than 0.50, so data non particularly meaningful. In our casuistry the percentage of surviving in the patients treated with T.P.N. as to those not treated, is nevertheless, very encouraging; furthermore, we most think that only by taking advantage of T.P.N. has been possible to extend the operability to patients that in the past because of well on years, or because of dangerous surgical illnesses joined to dismetabolic and cardiovascular diseases, were judged not operable.