35 research outputs found

    Metastasis of renal clear-cell carcinoma to the oral mucosa, an atypical location

    Get PDF
    The majority of cases of metastatic tumors involve the mandible and some the maxilla but they are considerably less common in intraoral soft tissues. In addition, the primary tumor is known in the majority of cases; although in onethird of such cases, metastasis is the first clinical manifestation. The most common primary tumors metastasizing to the mouth are lung carcinoma in men and breast carcinoma in women. An oral metastasis implies a serious prognosis, as in the majority of patients there is multiple organ involvement at the time of diagnosis. We present the case of a 52-year old patient with renal pathology who came to the emergency room due to a rapidly increasing gingival tumor. With the provisional clinical diagnosis of a pyogenic granuloma,the tumor was excised. Subsequent anatomopathological analysis revealed a tumor metastasis compatible with clear-cell carcinoma, and its renal origin was confirmed by means of immunohistochemical techniques

    Costochondral graft with green-stick fracture used in reconstruction of the mandibular condyle : experience in 13 clinical cases

    Get PDF
    Since its publication in 1920 by Gillies, costochondral grafts have been used by surgeons to replace an injured mandibular condyle and to reconstruct the temporomandibular joint. This procedure is currently applied in cases of congenital dysplasia, developmental defects, temporomandibular ankylosis, neoplastic disease, osteoarthritis and post-traumatic dysfunction. Over the years, various procedures for the reconstruction with this type of graft have been described. In 1989, Mosby and Hiatt described a technique for setting the graft securely, reducing the space between the graft and the mandibular area. In 1998, Monje and Martín-Granizo developed a variation of this method, enabling a precise adaptation of the costochondral graft to the remaining mandibular ramus. The aim of this study is to evaluate the functional and anatomic results of the costochondral graft treatment by green-stick fracture for reconstruction of the TMJ in the 10 years following the description of this technique. We carry out a retrospective study of thirteen cases of temporomandibular pathology (tumors, ankylosis and hypoplasia) treated during a period of ten years from 1998 to 2008. In all these cases, the technique described by Monje and MartínGranizo was used: removal of the sixth rib, fixation to a titanium mini-plate using screws, making an internal corticotomy in order to obtain a green-stick fracture of the outer cortex, providing adequate adaptation of the graft to the mandibular ramus. The graft was then set in place, attaching it with titanium screws. This technique was successful in achieving optimal ossification, a good interincisal opening and satisfactory cosmetic results. In conclusion, according to our experience, the green-stick fracture for the adaptation of costochondral grafts to the remaining mandibular ramus has presented outstanding results in the surgical treatment of temporomandibular pathology

    Smart Polymer Surfaces with Complex Wrinkled Patterns: Reversible, Non-Planar, Gradient, and Hierarchical Structures

    No full text
    This review summarizes the relevant developments in preparing wrinkled structures with variable characteristics. These include the formation of smart interfaces with reversible wrinkle formation, the construction of wrinkles in non-planar supports, or, more interestingly, the development of complex hierarchically structured wrinkled patterns. Smart wrinkled surfaces obtained using light-responsive, pH-responsive, temperature-responsive, and electromagnetic-responsive polymers are thoroughly described. These systems control the formation of wrinkles in particular surface positions and the reversible construction of planar-wrinkled surfaces. This know-how of non-planar substrates has been recently extended to other structures, thus forming wrinkled patterns on solid, hollow spheres, cylinders, and cylindrical tubes. Finally, this bibliographic analysis also presents some illustrative examples of the potential of wrinkle formation to create more complex patterns, including gradient structures and hierarchically multiscale-ordered wrinkles. The orientation and the wrinkle characteristics (amplitude and period) can also be modulated according to the requested application.The authors recognize the financial support from FONDECYT Grant N◦ 1220251 and N◦ 11230427. M.A. Sarabia-Vallejos acknowledges financial support from Universidad San Sebastián (USS) via project No. VRID FAI 21/17. J. Rodriguez-Hernandez acknowledges financial support from Ministerio de Ciencia, Innovación y Universidades (Project MAT2016-78437-R, FONDOS FEDER, and RTI2018-096328-B-I00). Finally, we thank the PIT FAB3D, PTI + Salud Global, and the PTI + SUSPLAST from CSIC for their supportPeer reviewe

    Psychological distress in women and men living with HIV in Spain: a cross-sectional telephone survey

    Get PDF
    Background: Psychological distress includes a broader range of experiences, varying from less severe symptoms of depression and anxiety to severe psychiatric disease. Global estimates for depression and anxiety in 2017 were 3.4% and 3.8%, respectively. While for people living with HIV, global estimates were 16% and 33%, respectively. Objective: We aimed to determine the prevalence of psychological distress by gender and associated characteristics in patients living with HIV. Methods: A cross-sectional study was conducted within the Spanish HIV Research Network CoRIS. Participants were interviewed by telephone between 2010 and 2014 about their psychological distress, sociodemographics, drug consumption, self-perceived health and combined antiretroviral therapy (cART) adherence. Laboratory tests and medical history details were collected from CoRIS. Logistic regression was used to identify characteristics associated with psychological distress. Findings: We interviewed 99 women and 464 men, both living with HIV. A greater proportion of women (51, 51.5%) reported psychological distress than men (179, 38.6%; p Conclusions and Clinical implications: As people living with HIV have a high prevalence of psychological distress, their regular screening appointments should include psychological assessment. A gendered approach is needed to detect and manage psychological distress.</br
    corecore