Conservative surgery for renal cell carcinoma.

The authors present their clinical experience in conservative surgery for renal cell carcinoma, which was performed in two cases of simultaneous bilateral tumours, in a case of neoplasm in solitary kidney, in two cases of cancers with damaged contralateral kidney and in two cases of association between cyst and small tumour. All patients are alive and without evidence of residual or recurrent malignancy with a followup ranging between 6 months and 7 years. The pros and cons of the various surgical solutions are discussed.

Angiographic aspects of renal cell carcinoma metastatic to the female genitalia.

Selective angiography of the hypogastric artery was performed in two patients presenting vaginal metastases from renal cell carcinoma, in order to better define the extent of the metastases. In other case left renal angiography revealed an unsuspected metastasis to the left ovary, fed by a middle perforating capsular artery.

The role of prostaglandins in the maintenance of the tone of the rabbit urinary bladder.

The effects of bladder distension on the production of prostaglandins (PGs) were studied in an isolated rabbit bladder preparation. Increasing bladder distensions induced a proportional release of PGs together with a parallel increase in endovesical pressure; pretreatment with indomethacin prevented both. Infusion of exogenous PGs into the arteries of bladders previously filled and treated with indomethacin produced a rise in endovesical pressure similar to that observed subsequent to distension of the untreated bladder.

Polyorchidism and seminoma in a child.

A case is reported of a neoplasm involving a supernumerary testicle in a 9-year-old boy. The histologic diagnosis was anaplastic seminoma. We have not been able to find a similar case in the literature.

Coexistence of renal artery stenosis and uretheropelvic junction obstruction in hypertensive patients with elevated renin.

Two hypertensive patients with elevated renin presenting with renal artery stenosis and ureteropelvic junction obstruction are reported. Nephrectomy was successful in 1 patient and the other patient was treated wiht renal autotransplantation and dismembered pyeloplasty. The diagnostic and therapeutic problems of coexistent renal lesions are discussed.

Experimental ureteral replacement with a vascularized gastric tubule.

Total ureteral substitution had been performed with a pedicled gastric flap shaped as a tubule in 6 dogs. No dilatation was found at X-ray controls. No metabolic changes were recorded.

Ex situ surgery of the kidney: experience with 20 autotransplantations.

The authors propose a classification of ex situ surgery of the kidney and present their clinical experience of 20 renal autotransplantations over a period of 6 years: 16 were performed for renovascular hypertension with 2 failures and 4 for recurrent staghorn calculi, with 1 stone recurrence. Based on their experience and on the literature they discuss the present status and the future implications of ex situ surgery of the kidney.

Embolism in a single functioning kidney: report of two cases.

2 cases of embolism in single functioning kidneys are reported. In the first case there was an occlusion of the main trunk of the renal artery; the patient was treated by embolectomy. In the second case the occlusion of a major arterial branch was demonstrated; because of the bad general conditions the patient was treated with medical therapy.

Selective transcatheter arterial embolization of renal carcinoma: an original technique.

The association of pharmaco-angiography with norepinephrine and transcatheter arterial embolization is a technique used to obstruct arteries invaded by renal carcinoma. We treated 4 patients with this method before nephrectomy and recommend its use as a complement to an operation for renal carcinoma or as definitive treatment in poor surgical candidates.