90 research outputs found

    A comparison framework and review of service brokerage solutions for cloud architectures

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    Cloud service brokerage has been identified as a key concern for future cloud technology development and research. We compare service brokerage solutions. A range of specific concerns like architecture, programming and quality will be looked at. We apply a 2-pronged classification and comparison framework.We will identify challenges and wider research objectives based on an identification of cloud broker architecture concerns and technical requirements for service brokerage solutions. We will discuss complex cloud architecture concerns such as commoditisation and federation of integrated, vertical cloud stacks

    CARCINOME VESICAL ET TUMEUR DE BRENNER DE L’OVAIRE: ORIGINES ETIOPATHOGENIQUES ET IMMUNOHISTOCHIMIQUES COMMUNES

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    Brenner’s tumor is a rare ovarian tumor that is diagnosed by anatomopathology. It’s relation with a bladder’s transitional cell carcinoma have suggested many etiopathogenic and immunohistochemical hypothesis. New insights highlights embryologic and immunoprofile common origins. The morphological similarity between the islands and Walthard Brenner tumor (presence of a bladder urothelium) suggest that this tumor may be a transitional cell metaplasia of the coelomic epitheliuma.La tumeur de Brenner est une tumeur rare de l’ovaire dont le diagnostic est anatomopathologique. Ses liens avec le carcinome urothĂ©lial de vessie soulĂšve de nombreuses hypothĂšses d’ordre Ă©tiopathogĂ©nique et histogĂ©nĂ©tique. De nouvelles pistes de recherches mettent en exergue des origines embryologiques et immunohistologiques communes. La ressemblance morphologique entre les Ăźlots de Walthard et la tumeur de Brenner (prĂ©sence d’un urothĂ©lium vĂ©sical) font penser que cette tumeur pourrait constituer une mĂ©taplasie cellulaire transitionnelle de l’épithĂ©lium coelomique

    HEMATOME SPONTANE SOUS CAPSULAIRE DU REIN

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    Spontaneous subcapsular haematoma of the kidney is a rare clinical condition, secondary to kidney tumors in more than 50% of cases. Diagnosis is suggested by sonography and confirmed by CT-scan. Renal angiography, performed in haemodynamically stable patients, shows the origin of bleeding and allows embolisation. The nephrectomy is indicated in front of a kidney tumor or non controlled bleeding.L’hĂ©matome spontanĂ© sous capsulaire du rein est une entitĂ© clinique rare. Les Ă©tiologies sont dominĂ©es par les tumeurs du rein dans plus de 50% des cas. Son diagnostic est suspectĂ© Ă  l’échographie et confirmĂ© par la tomodensitomĂ©trie. Chez les patients avec Ă©tat hĂ©modynamique stable, l’artĂ©riographie localise l’origine du saignement et permet l’embolisation thĂ©rapeutique. La nĂ©phrectomie est justifiĂ©e en prĂ©sence d’une tumeur ou en cas d’hĂ©morragie non contrĂŽlĂ©e

    An Update on the Anatomy of the Forehead Compartments

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    Background: The forehead is one of the most frequent locations for neuromodulator and soft tissue filler applications;however, the underlying anatomy is still poorly understood. Thus far, the presence of deep forehead compartments has not been confirmed. Methods: Twenty Caucasian cephalic specimens, 15 fresh frozen (six female and nine male) and five with formalin-phenol embalmment (three female and two male) were investigated using contrast-enhanced computed tomographic scans, dye injections, and anatomical dissections. Results: Three superficial (one central and two lateral) and three deep (one central and two lateral) forehead compartments were identified. The superficial fat compartments were found within the subcutaneous fat tissue (layer 2) and measured 2.1 x 4.6 mm for the superficial central forehead compartments and the right superficial lateral forehead compartments and 2.6 x 3.2 cm for the left superficial lateral forehead compartments, with a mean volume of 2.5, 3.1, and 3.4 cc, respectively. The deep fat compartments were identified deep to the frontalis muscle but superficial to the periosteum with an extent of 6.4 x 5.9 cm for the deep central forehead compartments, 2.6 x 5.8 cm for the right deep lateral forehead compartments, and 2.7 x 5.8 cm for the left deep lateral forehead compartments, and a mean volume of 9.1, 1.6, and 1.4 cc, respectively. Conclusions: The results presented in this study increase the understanding of the forehead anatomy. Understanding the presence of the superficial and the deep forehead compartments allows one to change the signs of frontal aging. The deep forehead compartments are in general avascular planes and permit blunt dissection for access to the supraorbital region

    Renal oncocytoma: experience of Clinical Urology A, Urology Department, CHU Ibn Sina, Rabat, Morocco and literature review

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    Renal oncocytoma is a rare and benign renal tumor. Only few cases have been reported in Moroccan populations. In the present study, we reportour experiences in the diagnosis, management and follow-up of this disease. We report on six cases of renal oncocytoma indentified between 1990 and 2008 in the urology department of “CHU Ibn Sina” in Rabat. These six cases are listed among 130 kidney tumors reported during the study period. We assess the clinical, radiological and therapeutic features of the patients and we review literature. Six cases of renal oncocytoma,representing 4.6% of all primitive kidney tumors treated in our institution during the study period. The mean age was 53 ±9.7 years (range 34 to61 years). One patient was asymptomatic at presentation, five patients (83%) had flank pain and two (33%) had macroscopic hematuria. Thetumor was right sided in 4 cases (66%) and left sided in 2 cases (33%). All patients underwent CT scan which showed, in three cases, a centrallylocated stellate area of low attenuation. The clinical suspicion of  oncocytoma was made preoperatively in only 3 patients by imaging studies, but the suspicion of renal cell carcinoma persist and all patients were treated with radical nephrectomy. Definitive diagnosis was made in all cases postoperatively. All the tumors were well circumscribed but unencapsulated. The mean tumor size was 8,75±2,04 cm. Four patients were classified at stage pT2 and two at stage p T1. Most of the pathological features in our patients were typical of this entity.  Predominant cell type was a typical oncocytoma with general low mitotic activity. No extension to peri-nephric fat tissue or lymphovascular invasion was observed. After a mean follow-up of 36 months (range 26-62 months), there was neither recurrence nor death from oncocytoma. Accordingly, the disease-specific survival was 100%. Renal oncocytoma has a benign clinical course with excellent long-term outcomes. In our series, it happened mostly in females and is more frequently symptomatic. Although radical nephrectomy is the usual treatment, a conservative approach should be considered whenever there are signs of clinical and radiological presumptions.Key words: Renal oncocytoma, tumor, diagnosis, treatmen

    Migration Intravésicale du Dispositif Intra-Utérin à Propos de Cinq Cas

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    La migration intravĂ©sicale du dispositif intra-utĂ©rin (DIU) par perforation utĂ©rine est une complication rare. Dans cette Ă©tude rĂ©trospective monocentrique, nous prĂ©sentons notre expĂ©rience de 5 cas colligĂ©s au sein de notre Ă©tablissement entre 2004 et 2009. L’ñge moyen de nos patientes est de 39 ans (32-48 ans). La symptomatologie clinique rĂ©vĂ©latrice Ă©tait dominĂ©e par le syndrome irritatif vĂ©sical. Le diagnostic a Ă©tĂ© Ă©voquĂ© sur le couple Ă©cho/AUSP, puis confirmĂ© par la cystoscopie. Le traitement a consistĂ© en une lithotritie balistique du calcul avec extraction du stĂ©rilet par voie endoscopique chez 4 patientes et extraction chirurgicale chez une seule.Mots clĂ©s : Calcul vĂ©sical, dispositif intra-utĂ©rin, lithotritie balistique, migration

    SĂ©minome Spermatocytaire: Ă  Propos d’un Cas et Revue de La LittĂ©rature Spermatocytic Seminoma

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    Le sĂ©minome spermatocytaire est une tumeur rare, reprĂ©sentant moins de 2% des cancers du testicule, survenant essentiellement chez le sujet ĂągĂ©. Nous rapportons une nouvelle observation d’un patient ĂągĂ© de 48 ans. La tumeur se prĂ©sentait comme une prolifĂ©ration de cellules en nappescompactes, avec 3 types cellulaires, des cellules de petite taille, des cellules intermĂ©diaires et des grandes cellules. Il n’a Ă©tĂ© retrouvĂ© ni contingent sarcomateux, ni sĂ©minome classique. L’analyse en immun histochimie n’a retrouvĂ© aucune expression des cellules tumorales pour les anticorpsclassiques testĂ©s, notamment l’Ac anti PLAP et les marqueurs lymphoĂŻdes. Le sĂ©minome spermatocytaire doit ĂȘtre reconnu, car son Ă©volution est trĂšs favorable et ne nĂ©cessite qu’une simple orchidectomie, en l’absence d’un exceptionnel contingent sarcomateux ou de mĂ©tastase oĂč une chimiothĂ©rapie s’impose

    Alpha Bloquants en Urologie

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    En urologie, les alpha-bloquants occupent une place prĂ©pondĂ©rante dans le traitement de nombreuses pathologies. Ils sont des dĂ©rivĂ©s de la quinazoline comme l’afluzosine, la tĂ©razosine et la doxazosine et des sulfones comme la tamsulosine, la silodosine et la prazosine. Ces molĂ©cules sont largement utilisĂ©es dans la pathologie prostatique et ont un effet relaxant sur les cellules musculaires lisses au niveau du col vĂ©sical avec comme consĂ©quence une amĂ©lioration considĂ©rable des troubles urinaires du bas appareil et de la fonction sexuelle. Ils partagent un avantage majeur, qui est leur rapiditĂ© d’action symptomatique avec amĂ©lioration de la qualitĂ© de vie. Ils ne modifient pas le volume de la prostate et leur association avec d’autres classes thĂ©rapeutiques est prometteuse et a montrĂ© son efficacitĂ©. Ils sont Ă©galement utilisĂ©s dans le traitement de la maladie du col vĂ©sical, la dyssynergie vĂ©sico-sphinctĂ©rienne, la vessie neurologique, le syndrome douloureux pelvien chronique et peuvent favoriser l’expulsion des calculs de l’uretĂšre en particulier pelvien. Cependant les alpha-bloquants ne sont pas dĂ©nudĂ©s d’effets indĂ©sirables et leurs contre indications sont bien prĂ©cisĂ©es

    A PBIL for load balancing in network coding based multicasting

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    One of the most important issues in multicast is how to achieve a balanced traffic load within a communications network. This paper formulates a load balancing optimization problem in the context of multicast with network coding and proposes a modified population based incremental learning (PBIL) algorithm for tackling it. A novel probability vector update scheme is developed to enhance the global exploration of the stochastic search by introducing extra flexibility when guiding the search towards promising areas in the search space. Experimental results demonstrate that the proposed PBIL outperforms a number of the state-of-the-art evolutionary algorithms in terms of the quality of the best solution obtained

    UNE TUMEUR VESICALE RARE : L’ADENOCARCINOME COLLOÏDE PRIMITIF. A PROPOS D’UNE OBSERVATION ET REVUE DE LA LITTERATURE

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    Primary mucinous adenocarcinoma is a rare bladder’s tumor, accounting for 14,6% of all primary bladder’s adenocarcinomas. Immunohistochemical analysis is important to define the primitive origin of the tumor and to eliminate a dissemination of other adenocarcinomas such as colorectal, prostate and gynecological tract or an urachous degenerescence. The treatment is meanly surgical by radical cystectomy. The prognosis becomes poor. In this observation, we report the case of a 52 year’s old man treated for a bladder’s primary mucinous adenocarcinoma by a radical cystectomiy and enterocystoplasty. He’s still alive after four years.L’adĂ©nocarcinome colloĂŻde primitif est une tumeur vĂ©sicale rare, reprĂ©sentant 14,6 % de l’ensemble des adĂ©nocarcinomes primitifs de vessie. Il siĂšge frĂ©quemment au niveau du dĂŽme de la vessie. L’étude immunohistochimique est capitale pour retenir la nature primitive de la tumeur et Ă©liminer une origine ouraquienne ou une extension prostatique, colorectale ou gynĂ©cologique. Le traitement est essentiellement chirurgical dominĂ© par la cystectomie totale. Le pronostic de cette tumeur demeure rĂ©servĂ©. Dans cette observation, nous rapportons le cas d’un patient de 51 ans pris en charge pour adĂ©nocarcinome colloĂŻde primitif de vessie, traitĂ© par cystectomie totale et entĂ©rocystoplastie de remplacement. Le recul est de 04 ans
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