Paraffinoma of the external genitalia after autoinjection of vaseline.

Five cases of sclerosing lipogranulomas of the external genitalia after previous injection of vaseline are presented. The public should be informed about the disastrous effects of paraffin injections and the importance of a radical but organ-preserving surgical treatment.

Politano-leadbetter ureteroneocystostomy. A 30-year experience.

Purpose: We evaluated the results and complications of children with reflux treated with the Politano-Leadbetter ureteroneocystostomy. In particular, we evaluated pre- and postoperative renal parenchymal scarring and the late development of hypertension.

Materials And Methods: From 1965 through 1996, 666 children (814 renal units) were reimplanted by nine urologists.

Prepubic urethrectomy with urethral stripping.

Purpose: Prepubic urethrectomy is a simple, safe alternative to perineal urethrectomy. The lithotomy position can be avoided and, thus, operative time and risk of deep venous thrombosis are decreased. We developed a simple modification because of difficulty in dissecting the bulbous urethra.

Quantitative determination of pentaerythrityl tetranitrate and its metabolites in human plasma by gas chromatography/mass spectrometry.

Up to now, there has been no data available on the pharmacokinetics of pentaerythrityl tetranitrate (PETN, CAS 78-11-5) and its metabolites, pentaerythrityl-trinitrate (PE-tri-N), pentaerythrityl-dinitrate (PE-di-N), pentaerythrityl-mononitrate (PE-mono-N) in human plasma. Therefore, in order to determine PETN and its metabolites in plasma sensitive and highly selective GC/MS methods had to be developed and validated. PETN and its metabolite PE-tri-N were validated in the concentration range 50 pg/ml to 10 ng/ml.