The histotopographic localization of the nerves of the vas deferens was studied in dogs. The nerves of the vas are concentrated at two poles. A vasectomy with a nerve-sparing technique and a conventional vasectomy were performed in two groups of dogs. 5 months later all dogs underwent vasovasostomy. The intact nerve supply after vasectomy was controlled by electrophysical measurement. Sperm evaluation and morphological findings are compared and the advantages of a nerve-sparing technique demonstrated. The proliferative capacity of the epithelial layer of the vas deferens has to be considered in operations on the vas.

We report on 64 patients subjected to radical cystectomy; 56 had carcinoma and 8 had non-tumorous indications (contracted bladder, exstrophy of the bladder). Indications, early and late results are discussed. In case of malignancy the rate of recurrences in early stages was about the same as in advanced stages. So it is not possible to say anything definitely about the individual prognosis of recurrence in patients undergoing radical cystectomy. It is easier to justify palliative cystectomy because of the relatively low risk of operation.

No abstract

No abstract