Melanoma amelanótico subungueal / Subungueal amelanotic melanoma

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[Jejunal obstruction by metastasis of a renal adenocarcinoma]. / Obstrucción yeyunal por metástasis de adenocarcinoma renal.

OBJECTIVE: To describe a case of jejunal obstruction due to metastatic renal adenocarcinoma. METHODS: A 66-year-old male who underwent nephrectomy 23 months earlier developed jejunal obstruction due to metastasis of the renal adenocarcinoma. The literature is reviewed and the uncommon form and site of presentation of this case are underscored and the different treatments are discussed.

[Comparative study of determined biochemical parameters in semen of vasectomized and non-vasectomized subjects]. / Estudio comparativo de determinados parámetros bioquímicos en semen de sujetos vasectomizados y no vasectomizados.

OBJECTIVE: Biochemical parameters, fundamentally those of prostatic origin, were analyzed and compared to determine the semen composition of vasectomized and non-vasectomized subjects. METHODS: 100 ml of semen from each group (vasectomized and non-vasectomized) were obtained. After thawing, the pool was homogenized and 5 one-ml sample from each one were analyzed for the following biochemical parameters: gamma glutamyl transferase (GGT), lactic dehydrogenase (LDH), prostate acid phosphatase (PAP), prostate-specific antigen (PSA) and total protein (TP) in the seminal plasma. Determination of the foregoing biochemical parameters was performed automatically with autoanalyzers. RESULTS: The mean values for the vasectomized and non-vasectomized groups were respectively: a) GGT: 8890 +/- 811 and 5714 +/- 403 IU/L; b) LDH: 7045 +/- 879 and 2465 +/- 339 IU/L; c) PAP: 2,099,000 +/- 330,764 and 1,860,000 +/- 302,138 ng/ml; d) PSA: 953,000 +/- 154,715 and 1,018,000 +/- 119,685 ng/ml; total protein: 39,860 +/- 1094 and 37,900 +/- 5606 micrograms/ml. CONCLUSIONS: Analysis of the different biochemical parameters showed no statistically significant differences between the mean values for PAP, PSA and total protein for the vasectomized and non-vasectomized group, but statistically significant differences were found for GGT and LDH (p < 0.001).

[Fournier gangrene: our experience]. / Gangrena de Fournier: nuestra experiencia.

OBJECTIVE: Fournier's gangrene is a necrotizing fasciitis involving the genitoperineal region caused by the synergistic action of aerobic and anaerobic pathogens. It is a rapidly progressing disease and carries a high mortality. Our experience with Fournier's gangrene is presented. METHODS: Herein we describe 11 cases of Fournier's gangrene that were diagnosed and treated from 1991 to 1996. The most important predisposing factor was diabetes mellitus and the most common triggering factor was a perianal condition. RESULTS/CONCLUSIONS: The survival rate was high (81%) and can be ascribed to early diagnosis, aggressive and rapid surgical treatment with debridement, resection of the necrotic areas, drainage, simultaneous broad spectrum antibiotic therapy and frequent local treatment.

[Renal carcinoma and acquired cystic disease of the kidney in a patient after transplantation and under hemodialysis]. / Carcinoma renal y enfermedad quística adquirida del riñón en paciente trasplantado y en hemodiálisis.

Renal Acquired Cystic Disease (RACD) is a frequent entity in patients with a long standing renal failure under hemodialysis treatment. Incidence of a tumor pathology is higher in those patients than in the general population. A new case is presented and some possible etiopathologenical factors of RACD and neoplasias on such pathology are established.

[Multicystic kidney: retroperitoneal mass frequently found in newborn infants]. / Riñón multiquístico: masa retroperitoneal frecuente en el recién nacido.

Ten cases of multicystic kidney in newborn infants are described herein. The diagnostic value of ultrasound during the prenatal period and postnatal follow-up is highlighted. The therapeutic approach in this condition is discussed.

[Ureterovesical reimplantation. Our results]. / Reimplantaciones ureterovesicales. Nuestros resultados.

We evaluated the results and complications of 85 ureteroneocystostomies performed from 1978 to 1987. These varied according to the etiology of the disorder; the success rate was 100% for malformations, 87.5% for gynecologic ureters, and 80% for stenosis of the end of the ureter. Several surgical techniques were employed. The Politano-Leadbetter procedure was the most widely-used (40% of cases), and the Cohen technique achieved the best results (100% success rate). All the failures (7.1% of the cases) were due to stenosis of the reimplanted ureter.