Safety of Porcine Reproductive and Respiratory Syndrome Modified Live Virus (MLV) vaccine strains in a young pig infection model.

The objective of this study was to compare the safety of all modified live virus vaccines commercially available in Europe against Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) under the same experimental conditions. For this purpose, one hundred and twenty three-week-old piglets, divided into five groups, were used. On day 0 of the experiment, nine pigs per group were removed and the remaining fifteen were vaccinated with the commercial vaccines Ingelvac PRRS MLV, Amervac PRRS, Pyrsvac-183 and Porcilis PRRS by the IM route or were mock vaccinated and used as controls.

Primary malignant melanoma of urinary bladder.

We report a case of primary malignant melanoma of the urinary bladder. Exclusion of other sites of melanoma confirmed the primary character of the tumor, and careful histologic examination proved it to be malignant melanoma. Six previously reported cases of bladder melanoma are reviewed.

Potential overstaging of bladder cancer by computerized tomography scanning.

We report 4 cases of bladder cancer that was overstaged by computerized tomography. In 2 patients the scans were performed after cystoscopy and bladder biopsy, and overstaging occurred secondary to artifacts produced at the time of biopsy. In the other 2 patients the scans were done before biopsy.

Surgical management of ectopic ureterocele.

Nine patients with ectopic ureterocele, complete duplication, and nonvisualization of the upper renal segment are presented. All were managed with heminephrectomy and partial ureterectomy only. The procedure immediately controlled urosepsis, and ultimately was successful in the management of associated reflux.

Dynamic renal scan in the non-visualizing kidney.

Thirty-one patients with 35 non-visualizing kidneys on excretory urography were studied with 99mtechnetium-diethylenetriaminepentaacetic acid scintiscanning. In 11 cases good renal blood flow and concentration were demonstrated on nucleide scanning. All patients had significant parenchyma and recoverable renal function after appropriate surgical management.

Varicocelectomy and infertility.

Eighty males with varicocele underwent internal spermatic vein ligation as therapy for infertility. Semen quality improved in 78 per cent following ligation, and 51 per cent of wives became pregnant. The results in this series compare favorably with previous studies.

Urologic complications of renal papillary necrosis.

Fifty-six patients demonstrating roentgenographic evidence of renal papillary necrosis were reviewed. Seven patients had an acute fulminating form of the disease. Urologic complication incident to sloughed renal papillae required urgent surgical intervention.