The accuracy of renal tumor biopsy: analysis from a national prospective study.

Objective: To assess preoperative renal tumor biopsy (RTB) accuracy.

Materials And Methods: As part of the prospective NEPHRON study, data from 1,237 renal tumors were collected, including the use and results of RTB and final histology following nephrectomy. During the 6 months period of inclusion, 130 preoperative biopsies were performed.

Subcutaneous interleukin-2 and interferon-alpha in metastatic renal cell carcinoma: results of a French regional experience in Languedoc.

Objectives: To assess the efficacy and toxicity of an immunotherapy regimen combining subcutaneous (SC) interleukin-2 (IL-2) and interferon-alpha (IFN) in patients with metastatic renal cell carcinoma (MRCC).

Methods: The present study included 86 patients with MRCC. Data on treatment toxicity and efficacy (responses rates and overall survival) were collected on a hospital database.

[Cancer of the prostate. 2. Physiology and cellular development].

Prostatic cancer is the second most frequent cancer in men in industrialised countries. The histological analysis of its initial development demonstrates the existence of precancerous lesions, PIN. The initial presence of several different cell populations accounts for the development of contingents of hormone-sensitive and hormone-resistant cells.

[Cancer of the prostate. 1. Epidemiology].

Prostatic cancer is the second most frequent cancer in men in France. It is a serious disease with a relative 5-year survival of 42%. Although the incidence of latent forms appears to be constant throughout the world, the incidence of clinical forms varies from country to country and according to race.

[Renal nephrogenic nephroma: an little known exceptional tumor. Apropos of a case disclosed by xanthogranulomatous pyelonephritis].

The authors report a new case of an exceptional benign renal tumour: nephronogenic nephroma, composed of differentiation of the blastema into primitive nephronic formations. It raises the problem of differential diagnosis with adult Wilms' tumour and renal blastematosis. In this patient, it was associated with segmental xanthogranulomatous pyelonephritis, presenting in the form of psoïtis and an abscess of the thigh.