[Paratesticular dermoid cyst. Report of a case and review of the literature].

It is discussed a dermoid cyst case that depends on paratesticular structures, clinical entity which has low frequency of presentation. It is analyzed the controversial terminology of this tumours and are established anatomopathological criteria for this disease.

[Urinary excretion of cytokines in bladder carcinoma].

Objective: Analysis of the urinary excretion of cytokines in vesical carcinoma.

Material And Method: The study includes the results obtained in the quantification of several interleukins (IL-1, IL-2, IL-4, IL-6, INF-gamma and TNF-alpha) in urine samples corresponding to 60 patients with transitional cell carcinoma (TCC) with vesical location (40 surface and 20 infiltrant). Concurrently, 40 healthy donors and 20 patients with urinary tract infections were studied.

[Retrovesical hemangiopericytoma].

The hemangiopericytoma is an uncommon variety of the mesenchymal tumour derived from pericapillary structures, most frequently located in limbs and exceptionally at the retroperitoneum level. Although macroscopically the aspect is benign, this tumour has a recognised ability for local invasion and distant dissemination.

Clinical significance of natural killer activity in patients with transitional cell carcinoma of the bladder.

We studied the relationship of natural killer activity from peripheral blood mononuclear cells with clinical stage of disease and the different modalities of treatment in 67 untreated patients with transitional cell carcinoma of the bladder and 29 normal controls. Peripheral blood mononuclear cells from 39 patients with superficial bladder tumor (stages Ta and T1) showed a natural killer cell activity similar to that of controls (p greater than 0.05), while in 28 patients with infiltrating tumors (stages T2, T3 and T4) this activity was significantly depressed (p less than 0.