TRUS-MRI image registration: a paradigm shift in the diagnosis of significant prostate cancer.

Accuracy of multiparametric MRI has greatly improved the ability of localizing tumor foci of prostate cancer. This property can be used to perform a TRUS-MR image registration, new technological advance, which allows for an overlay of an MRI onto a TRUS image to target a prostate biopsy toward a suspicious area Three types of registration have been developed: cognitive-based, sensor-based, and organ-based registration. Cognitive registration consists of aiming a suspicious area during biopsy with the knowledge of the lesion location identified on multiparametric MRI. Sensor-based registration consists of tracking in real time the TRUS probe with a magnetic device, achieving a global positioning system which overlays in real-time prostate image on both modalities. Its main limitation is that it does not take into account prostate and patient motion during biopsy. Two systems (Artemis and Uronav) have been developed to partially circumvent this drawback. Organ-based registration (Koelis) does not aim to track the TRUS probe, but the prostate itself to compute in a 3D acquisition the TRUS prostate shape, allowing for a registration with the corresponding 3D MRI shape. This system is not limited by prostate/patient motion and allows for a deformation of the organ during registration. Pros and cons of each technique and the rationale for a targeted biopsy only policy are discussed.

Sarcopenia and body mass index predict sunitinib-induced early dose-limiting toxicities in renal cancer patients.

BACKGROUND: Little is known on factors predicting sunitinib toxicity. Recently, the condition of low muscle mass, named sarcopenia, was identified as a significant predictor of toxicity in metastatic renal cell cancer (mRCC) patients treated with sorafenib. We investigated whether sarcopenia could predict early dose-limiting toxicities (DLTs) occurrence in mRCC patients treated with sunitinib. METHODS: Consecutive mRCC patients treated with sunitinib were retrospectively reviewed. A DLT was defined as any toxicity leading to dose reduction or treatment discontinuation. Body composition was evaluated using CT scan obtained within 1 month before treatment initiation. RESULTS: Among 61 patients eligible for analysis, 52.5% were sarcopenic and 32.8% had both sarcopenia and a body mass index (BMI)<25 kg m(-2). Eighteen patients (29.5%) experienced a DLT during the first cycle. Sarcopenic patients with a BMI<25 kg m(-2) experienced more DLTs (P=0.01; odds ratio=4.1; 95% CI: (1.3-13.3)), more cumulative grade 2 or 3 toxicities (P=0.008), more grade 3 toxicities (P=0.04) and more acute vascular toxicities (P=0.009). CONCLUSION: Patients with sarcopenia and a BMI<25 kg m(-2) experienced significantly more DLTs during the first cycle of treatment.

[Benign prostatic hyperplasia medical treatment: systematic review of the literature by the CTMH/AFU]. / Traitement médical de l'hyperplasie bénigne de la prostate: revue de littérature par le CTMH/AFU.

INTRODUCTION AND OBJECTIVES: The medical treatment of lower urinary tract symptoms related to benign prostatic hyperplasia (LUTS-BPH) has dramatically evolved within the last years: new drugs have been commercialized and others that used to be contra-indicated may now be prescribed. Our objective was to provide with an updated review of the scientific literature on the medical treatment of LUTS-BPH. PATIENT AND METHOD: A systematic review of the most recent scientific literature was performed. The query was addressed to the PubMed database using the following keywords: "benign prostatic hyperplasia" and "medical treatment". A very large amount of publications, from year 1990 until 2011, were reviewed to select the publications with level of evidence 1 and 2. These publications were analysed and the 30 most relevant were selected to serve as references for this article. RESULTS: There are many randomized clinical trials in the field of LUTS-BPH medical treatment. Recently, anti-muscarinic agents have been assessed and have proven their efficacy and tolerance as long as the storage symptoms are predominant over the voiding symptoms. Combination therapies using alpha-blockers and 5-alpha reductase (5-ARI) inhibitors, but also anti-muscarinic agents and PDEF-5 inhibitors may also be prescribed depending on the patient' complaint. CONCLUSION: The publication of recent randomized clinical trials allows the urologists to use new drugs and new combination therapies in the medical treatment of LUTS-BPH. In 2011, the medical treatment decision-making may better integrate the patient' complaint and medical history.

[Primary metastatic urethral melanoma: a case study]. / Mélanome primitif de l'urètre découvert au stade métastatique: à propos d'un cas.

PURPOSE: Primary urethral melanoma is a rare pathology for which treatment strategies are controversial. The aim of this work was to report a case of metastatic primary urethral melanoma, and to discuss recent data available from literature. MATERIAL AND METHOD: Case study was summarized from the patient's medical chart. Review of literature was performed using the National Center for Biotechnology Information (NCBI) database. RESULTS: We reported the case of an 89-year-old woman who died from a primary metastatic melanoma of the urethra. This pathology encounters for less than 1% of melanomas and has an adverse prognosis. In case of metastasis, specific survival is only of a few months. When localized to the urethra, treatment relies on radical urethrectomy, followed by adjuvant chemo- and immunotherapy. CONCLUSIONS: The modalities of treatment of primary urethral melanoma rely only on reported case studies. When diagnosed at the metastatic stage, reported specific survival does not exceed a few months.