Fibroma desmoplásico, reporte de un caso y revisión de la literatura

ResumenEl fibroma desmoplásico es una lesión neoplásica relativamente rara. Se considera un tumor primario de hueso, que se presenta comúnmente en la región mandibular. Se define como un tumor benigno caracterizado por la formación de abundante matriz y fibras colágenas. En marzo de 2004 se presenta el caso de un paciente de 15 años, varón, con aumento gradual en la región derecha de la mandíbula de 4 meses de evolución. Se manifiesta asintomático, con aumento de volumen, con una apariencia radiográfica y tomográfica bien delimitada radiolúcida. A la exploración se observa un infiltrado a través de la cortical lingual. La lesión es similar a las descritas en la literatura de fibroma desmoplásico.AbstractDesmoplastic fibroma (fibromatosis) is rarely seen a primary tumor of bone. Its occurrence as a central lesion in the jaws is even more uncommon. It is rare tumor of bone, especially in the mandibule. In march 2004, a 15 year-old boy presented, with a 4 month history of gradual enlargement of the right mandibule. Painless intraoral and extraoral swelling, the cortical plate of bone overlying the lesions is expanded with thinning, erosion, and infiltration into the surrounding tissues. The lesion is similar to the one described on the articule

Infecciones intrahospitalarias en el estudiante de medicina.: Intrahospital infections in the medical student

The diseases associated with care in the health sector is a problem that not only involves patients who enter the service, but also the staff and students who carry out their practices in the different institutions. In-hospital infections are defined as: "Localized or systemic diseases resulting from an adverse reaction resulting from exposure to an infectious agent or its toxins, with no evidence that the infection was present or in the incubation period at the time of care." The lack of knowledge on the part of the personnel and students of the health sciences that are in contact with the patients, in addition to the realization of sanitary practices without taking into account the pertinent biosecurity measures are the main reasons for contracting a nosocomial infection.Las enfermedades asociadas a la atención en el sector salud es una problemática que no solo implica a los pacientes que ingresan al servicio, si no al personal y a los estudiantes que llevan a cabo sus prácticas en las diferentes instituciones. Las infecciones intrahospitalarias están definidas como: “Enfermedades localizadas o sistémicas que resultan de una reacción adversa consecuente a la exposición a un agente infeccioso o a sus toxinas, sin evidencia que la infección estuviera presente o en periodo de incubación en el momento de la atención” . La falta de conocimientos por parte del personal y estudiantes de las ciencias de la salud que están en contacto con los pacientes, además de la realización de prácticas sanitarias sin tomar en cuenta las medidas de bioseguridad pertinentes son los principales motivos para contraer una infección nosocomial

SU(1,1) Coherent States For Position-Dependent Mass Singular Oscillators

The Schroedinger equation for position-dependent mass singular oscillators is solved by means of the factorization method and point transformations. These systems share their spectrum with the conventional singular oscillator. Ladder operators are constructed to close the su(1,1) Lie algebra and the involved point transformations are shown to preserve the structure of the Barut-Girardello and Perelomov coherent states.Comment: 11 pages, 5 figures. This shortened version (includes new references) has been adapted for its publication in International Journal of Theoretical Physic

Amputación Pirogoff modificada aplicada a la cirugía oncológica del pie

Los sarcomas óseos y de tejidos blandos del pie son infrecuentes, representando menos del 10% de todos los sarcomas de la extremidad inferior. El tratamiento más frecuente de los sarcomas del pie es la amputación por debajo de la rodilla, debido a la imposibilidad de conseguir márgenes amplios, pero en determinados casos de tumores del antepié se puede optar por una amputación parcial del pie con margen amplio. Se presenta una serie de tres casos de amputación de Pirogoff modificada aplicada a la resección oncológica tumoral. La amputación de Pirogoff consiste en una artrodesis calcaneotibial con resección del astrágalo, rotando el calcáneo 90°. La modificación de la técnica de amputación del Pirogoff, en la que se conservan ambos maléolos con escisión de la carilla articular favorece la estabilidad en el plano lateral y ayuda a una más rápida artrodesis. Es muy importante mantener los principios oncológicos de la resección tumoral.Bone and soft-tissue sarcomata of the foot are infrequent neoplasms, representing less than 10% of all lower limb sarcomata. The most frequent therapeutic measure for foot sarcomata is amputation below the knee, due to the difficulty to achieve ample (onco-)-surgical margins, yet in a number of cases of forefoottumours there is an option for partial foot amputation with ample surgical margins. We report a series of three cases of modified Pirogoff's amputation as applied to oncosurgical tumour resection. Pirogoff's amputation is a calcaneo-tibial arthrodesis with resection of the talus and 90° rotation of the calcaneus. The here reported modification of the Pirogoff amputation, in which both malleoli are preserved yet with excision of the articular surface, favours lateral-plane stability and promotes a quicker arthrodesis. It is highly important to observe and maintain the oncologic surgery principles for tumour resection

“Education Network” a new way to teach Chemistry

The complexity of chemistry has implications for the teaching of chemistry. That chemistry is a very complex subject. The majority of the students at University think that chemistry is a difficult discipline and they have difficulty in understanding the concepts. Moreover, students' interest in chemistry decreases the first year at university. The reason for this decrease might be that the contents of chemistry laboratory classes are boring, out of date and lacking of dynamism that students experience through visual media tools. For these reasons, new programs and methodologies should be developed. Those are based on making chemistry relevant through problem solving and collaborative learning hold promise for reforming chemistry education. It is about an education according to circumstances, which is adapted to context and virtual behaviour of people. It's time to CRUSH boredom by transforming your classroom into an Escape Room adventure. School-based escape games are a great teaching tool. The students while playing, learn. The most important point is that they won’t realize they’re doing both at the same time. In this work, an educational gamification experience based on the escape room concept was developed. The first (Do It Yourself) DIY Escape Room was built the year before at Mechanical Engineer Degree started, that took more than three weeks of work. It was presented to other professors to the same subject at different degrees. That DIY Escape Room was modified and adapted to each group. Each professor changed the clues, problems and so on in order to orientate the topic as much as possible to their students.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech