[Therapeutic embolization of the venous bed using Vilan 500 in animal experiments].

The experiment in four dogs verified a suitability of the Czechoslovak preparation Vilan 500, a copolymer of polyvinyl acetate - polyvinyl alcohol in 93% ethanol, for the embolism of venous vascular bed in the percutaneous, transfemoral catheterization way. In all four cases there was a complete occlusion of embolized spermatic or pararenal veins, verified by a control angiography after one hour and after three months. The prepared venous samples were also examined by histology and changes indicating intraluminar thrombotization and subsequent fibrous reconstruction were observed.

[Possibilities of diagnostic imaging in nephroblastomatosis].

Nephroblastomatosis means persisting embryonic, undifferentiated cells of renal blastoma which may give rise to a nephroblastoma. The foci of nephroblastomatosis create intrarenal nodi or a subcapsular border. The present scanning methods make it possible to correctly differentiate nephroblastomatosis in most cases and to differentiate it from most lesions previously hard to recognize from each other, while CT and arteriography represent the most sensitive methods.

[Therapy of esophageal strictures in childhood using balloon dilatation catheters].

The authors used in 1987-1988 Grüntzing's balloon catheter for the treatment of oesophageal strictures in nine children. They were successful in eight, in one patient after burning of the oesophagus with sulphuric acid the dilatation by means of the balloon failed. These injuries must be treated by surgery.

[A new method of treating male infertility: percutaneous transfemoral embolization of varicoceles with Vilan 500].

The authors describe a new method of treatment of male infertility. In 25 men aged 19-45 years with varicocele, after percutaneous transfemoral catheterization, embolization of the spermatic vein with the Czechoslovak preparation Vilan 500 (hydrolyzed co-polymer of polyvinyl acetate and polyvinyl alcohol in 96% ethyl alcohol) was performed. Six patients were treated on account of marked subjective complaints and 19 because of reduced fertility.

Perinatal subglottic and hepatic hemangiomas as potential emergencies: effect of radiotherapy.

The authors analyze 5 cases of perinatal hemangiomas in internal localizations respresenting relative or immediate emergencies. Three cases were subglottic proliferating hemangiomas with threatening suffocation, the other two were large hemangiomas of the liver causing conspicuous hepatomegaly. In 3 children there were also hemangiomas of the skin and/or in the oral cavity seen as important signs in the diagnostic reflections on the nature of the urgent clinical pictures.