[Comparative experimental study of the renal consequences of vesico-ureteric reflux and of ureteric obstruction in the sheep foetus (author's transl)]. / Etude expérimentale comparée des conséquences rénales du reflux vésico-urétéral et de l'obstruction urétérale chez le foetus de brebis.

The authors sought to determine what links existed between foetal vesico-ureteric reflux and renal dysplasia. Using sheep with operation upon the foetuses in utero, at a fairly early stage of gestation, the following were obtained: 1) Foetal vesico-ureteric reflux by unilateral excision of a ureteric meatus. 2) Stenosis of the foetal ureter by ligation. In the first case, no renal dysplasia occurred. In the second case, dysplasia-type parenchymatous lesions were found. This led them to conclude that the direct relationship between isolated foetal vesico ureteric reflux created experimentally in a normal ureter (without any additional functional or organic obstructive factor) and renal dysplasia could not be demonstrated in the sheep foetus.

[The radiological exploration of renal tumour syndromes [author's transl)]. / Exploration radiologique des syndromes tumoraux rénaux.

Four radiological examinations are available to the clinician for the diagnosis of renal tumour syndromes: intravenous pyelography with vascular nephrotomography is used to make an initial classification. Hypervascularised masses, usually malignant, remain the indication of choice for renal arteriography. Apparently avascular or doubtful masses should first be studied by ultrasound echotomography which offers the possibility of a second classification into fluid-filled tumours, the cystic nature of which may be confirmed by translumbar puncture followed by kystography, and solid or doubtful tumours, suggestive above all of a necrosed carcinoma. In this latter case, the indications for renal arteriography with the use of angiotensin, translumbar puncture or immediate exploratory lumbotomy must be decided in the light of individual cases and local preferences.

Angiographic study of renal vein involvement in renal cell carcinoma.

High dose selective renal arteriography was performed in 62 cases of renal cell carcinoma to study the patency of the renal vein trunk. Arteriographic findings were correlated with histopathology in all cases. In 35 cases of angiographic patency of the renal vein surgery always confirmed the findings. 11 false positive results were observed (the arteriographic diagnosis of venous involvement was not found at surgery). The authors believe that this method is easy and reliable; inferior cavagraphy is not necessary when arteriography shows the patency of the vein.

[The diagnostic possibilities and limitations of arteriography in necrosed carcinomas of the kidney (author's transl)]. / Les possibilités et les limites diagnostiques de l'artériographie dans les cancers nécrosés du rein.

On the basis of a review of 186 cases of carcinoma of the kidney studied by arteriography in the Department of Radiology for Diseases of the Urinary Tract at Necker Hospital, the authors drew the following conclusions: 1. The diagnosis of carcinoma could be affirmed in the very great majority of cases and suspected in the others. 2. There were no instances of a reassuring false diagnosis (cyst). 3. A precise, rigourous and faultless technique, perfectly demonstrating the exteriorised part of the mass and attentive, thorough and careful interpretation of the films obtained, in particular with regard to the mass in its exteriorised portion, are always essential in order to obtain such results. In particular, the presence of a vascularisation of a discontinuous opaque band at the periphery of the mass in its exteriorised part indicates a strong suspicion of a necrotic malignancy and under no circumstances is an unreserved diagnosis of a cyst possible. 4. Diagnostic errors in the sense of false positives involving certain "thick-walled" cysts should be eliminated by pre-operative needle puncture. 5. The authors conclude by describing the method of radiological exploration which they feel to be desirable in practice following the discovery of a renal mass by intravenous pyelography.

[Radiological diagnosis of tumoral lipomatosis of the renal sinus. The role of arteriography (author's transl)]. / Le diagnostic radiologique de la lipomatose pseudo-tumorale du sinus rénal Place de l'arteriographie.

In twenty cases of pseudo-tumoral sinusal lipomatosis for which the patients had undergone renal arteriography, the authors investigated the urographical and arteriographical clinical signs by comparing them with the previously published data. After reviewing these various elements and considering the various possible diagnoses, they came to the conclusion that, although the arteriographic signs are quite distinctive, they are not absolutely essential for diagnosis of this disorder--which it should be possible to confirm unreservedly from the urographical data in all cases in which there are considerable anatomical lesions. A well-managed urographical technique and careful assessment of the facts should allow arteriography to be discarded, indications for this only being justified where there is an associated symptomatology, especially haematuria.

[Management of renal trauma in the child (author's transl)]. / Conduite à tenir lors d'un traumatisme rénal chez l'enfant

Intravenous pyelography remains the basic examination in the study of the child with lumbar trauma. This examination has its limits, however, and renal arteriography may be necessary in a fair number of cases. Provided that adequate reflection is given and the appropriate moment chosen, it is well tolerated and provides all the necessary information.