[Malignant tumours in horseshoe kidneys (author's transl)].

Hypernephromas were found in horseshoe kidneys in two patients; the diagnostic problems arising from this combination are discussed. Detailed demonstration of horseshoe kidneys by excretion urograms may be poor and tumours may therefore be overlooked and, on palpation, an abnormality within the gastrointestinal tract may be simulated. Angiography usually indicates the diagnosis and helps in planning surgery.

[Acute aortic thrombosis (author's transl)].

A case of acute thrombosis of the aorta is described; it extended from the superior mesenteric artery to the bifurkation and was probably due to oestrogen medication. The clinical features and diagnosis of this rare condition are described. The condition usually develops against a background of advanced arteriosclerosis and is initiated by certain haemodynamic factors such as intimal damage from blunt trauma, emboli or the thrombogenic effect of oestrogens.

[Angiography of carcinomas of the renal pelvis (author's transl)].

The angiographic criteria of 19 renal pelvic carcinomas were analysed. Two groups of signs, direct and indirect, could be detected. Of 19 histologically proved cases of renal pelvic carcinomas, the diagnosis had not been made angiographically in the case of a small tumor, which was 11 mm in diameter.