Quiste dermoide en el piso de la boca: comunicación de un caso

Los quistes dermoides son lesiones benignas que aparecen en la línea media del piso de la boca. Se originan por el atrapamiento del epitelio germinal durante el cierre de los arcos branquiales. Constituyen 23% de los quistes dermoides de la cabeza y el cuello. Son lesiones de crecimiento lento, no dolorosas y se manifestan a cualquier edad, principalmente entre los 15 y 35 años. Desde el punto de vista histopatológico, están constituidos por una cubierta epitelial, contienen elementos de origen ectodérmico y mesodérmico (piel y anexos). El tratamiento consiste en resección quirúrgica. Se comunica el caso de un paciente de 51 años de edad con quiste dermoide en el piso de la boca, intervenido quirúrgicamento con abordaje intraoral. Abstract: Dermoid cysts are benign lesions present in the midline of the floor of the mouth cause by germinal epithelium entrapment during branchial arcs closing development. They compose 23% of the dermoid cysts of head and neck. These lesions, which develop slowly and are painless, occur in young adults between 15 to 35 years old, but they can be present at any age,. Common histological findings are mesoderm and ectoderm tissue (skin and annex). Surgical resection is the treatment. A 51-year-old male with a dermoid cyst on the floor of the mouth surgically treated by a trans-oral approach is presented

Laryngeal amyloidosis: An uncommon cause of dysphonia

Introduction: Amyloidosis is used to describe a range of disorders deined by extracellular deposition of abnormal protein ibrils. The larynx is the most common site of localized amyloidosis in the head and neck region and constitutes less than 1% of benign laryngeal lesions. Hoarseness is the most common symptom. Objective: Prospective clinical evaluation of patients with localized laryngeal amyloidosis. Clinical cases: Presented are 4 cases of patients with localized laryngeal amyloidosis who were treated at the Otolaryngology and Head and Neck Surgery Department at the “Dr. José Eleuterio González” University Hospital in Monterrey, Mexico. Three patients underwent phonomicrosurgery by direct microlaryngoscopy with the removal of the amyloid implantation using a cold knife excision with great results. In each patient the major site of involvement was the supraglottis with a small focus on the false vocal cord. A medical work-up, including a complete blood count (CBC), a basic metabolic panel, urinalysis, liver function test, chest X-ray and physical examination were performed to rule out the presence of systemic disease; no amyloidosis or signs of systemic disease were found. Congo red staining conirms the diagnosis of amyloidosis in all surgical specimens. Conclusions: In laryngeal amyloidosis, the treatment should be directed toward the improvement of the voice and the maintenance of the airway

Prevalence of sensorineural hearing loss in children and adolescents with diabetes mellitus

To establish the prevalence of sensorineural hearing loss (SNHL), as well as the predisposing risk factors, in children and adolescents with type 1 diabetes mellitus (T1DM) attending the Service of Endocrino-Pediatrics and Otolaryngology Department of the ‘‘Dr. José Eleuterio González’’ University Hospital and the Materno-Infantil Hospital, from January 2011 to December 2012. Material and methods: A total of 84 children with T1DM, with ages between 6 and 18 years old, were studied. Values of glycated hemoglobin (HbA1c) were assessed and Tonal audiometry and Speech audiometry tests were performed. Results: A total of 84 patients with a diagnosis of T1DM were studied, out of which 12 (14.3%) presented SNHL. Fifty percent of patients with hearing loss were in the age range of 10---13 years old. Regarding time of evolution with the disease (T1DM), 33% of patients with more than 5 years with T1DM presented SNHL, and nearly 88.9% of the patients with less than 5 years with T1DM presented normal hearing (p = 0.011). Moreover, 65.47% of the patients presented complications due to poor glycemic control at some point in the evolution of their disease. All (100%) diabetic patients with SNHL and 91% of the patients without SNHL had HbA1c values greater than 6%. In patients with hearing impairments, 83.3% suffered mild and 16.4% suffered moderate hearing loss. Most presented bilateral hearing loss, with the right ear dominating. Acute frequencies, mainly 8000 kHz, were the most affected

Olfactory dysfunction in young smokers J.

To establish the prevalence of olfactory dysfunction in smoking and non-smoking students of our Faculty who attend the Department of Otolaryngology (ENT) of our Hospital. Materials and method: Students (smokers and non-smokers) that do and do not suffer from olfactory dysfunction. We applied a questionnaire and a pocket smell test for screening all of the students. Results: We evaluated 207 students, between 18 and 30 years old; 50.7% (n=105) were women and 49.3% (n=102) were men. The smokers among them smoked up to 6 packs per year. One hundred twenty three students were non-smokers and 84 students were smokers. Of the 84 students who were smokers, 67 (79.7%) answered the Pocket Smell Test correctly (3/3) and 17 (20.2%) students had one or more errors. We had 123 non-smoker students and 103 (83.7%) students answered the Pocket Smell Test correctly and 20 (16.2%) answered with one or more errors. The prevalence of olfactory dysfunction in young smokers with a 95% conidence interval would be 32.8%. Conclusions: This study informed us about olfactory dysfunctions in our student population and their smoking habits. We corroborate that the Pocket Smell Test is reliable with the questionnaire; nevertheless it is a screening test. We have a population of young people who smoke one cigarette per day and who didn’t have a signiicant alteration in their ability of smell at the time of the study. This is consistent with medical literature. More studies should be conducted in order to expand this information

Functional architecture of Escherichia coli: new insights provided by a natural decomposition approach

The E. coli transcriptional regulatory network is shown to have a nonpyramidal architecture of independent modules governed by transcription factors, whose responses are integrated by intermodular genes

Hipoacusia neurosensorial subclínica en pacientes femeninas con artritis reumatoide

ResumenAntecedentesLa artritis reumatoide es una entidad clínica capaz de ocasionar hipoacusia neurosensorial, pudiendo ser diagnosticada oportunamente con audiometría de altas frecuencias.ObjetivoDetectar hipoacusia neurosensorial subclínica en pacientes con artritis reumatoide.Material y métodosEstudio transversal en pacientes con artritis reumatoide, donde se realiza audiometría de hasta altas frecuencias de 125-16,000Hz y timpanometría. Los resultados fueron correlacionados con marcadores de actividad de la enfermedad y la respuesta al tratamiento.ResultadosSe realizó audiometría particularmente de altas frecuencias en 117 pacientes femeninas con edad de 19-65 años. La hipoacusia neurosensorial fue observada a una sensibilidad de tonos puros de 125-8,000Hz en el 43.59% y umbrales de tonos de 10,000-16,000Hz en el 94.02% de los pacientes en oído derecho y en el 95.73% en oído izquierdo. Audición normal en 8 (6.84%) pacientes, hipoacusia en 109 (93.16%), asimétrica en 36 (30.77%), simétrica en 73 (62.37%), bilateral en 107 (91.45%) y unilateral en 2 (1.71%); no encontramos hipoacusia de conducción o mixta. Ocho (6.83%) pacientes cursaron con vértigo, 24 (20.51%) con tinitus. Timpanograma tipo A presente en el 88.90% en oído derecho y en el 91.46% en oído izquierdo, el 5.98-10.25% tipo As; reflejo estapedial en el 75.3-85.2%. Hubo diferencia significativa (p=0.02) en discriminación del lenguaje en oído izquierdo en mayores de 50 años. No encontramos asociación con marcadores de actividad de la enfermedad. Se observó asociación con el inicio de la artritis reumatoide.ConclusionesLos pacientes con artritis reumatoide tienen alta prevalencia de hipoacusia neurosensorial para altas frecuencias.AbstractBackgroundThe rheumatoid arthritis is a clinical entity capable to cause hearing impairment that can be diagnosed promptly with high frequencies audiometry.ObjectiveTo detect subclinical sensorineural hearing loss in patients with rheumatoid arthritis.Material and methodsCross-sectional study on patients with rheumatoid arthritis performing high frequency audiometry 125Hz to 16,000Hz and tympanometry. The results were correlated with markers of disease activity and response to therapy.ResultsHigh frequency audiometry was performed in 117 female patients aged from 19 to 65 years. Sensorineural hearing loss was observed at a sensitivity of pure tones from 125 to 8,000 Hz in 43.59%, a tone threshold of 10,000 to 16,000Hz in 94.02% patients in the right ear and in 95.73% in the left ear. Hearing was normal in 8 (6.84%) patients. Hearing loss was observed in 109 (93.16%), and was asymmetric in 36 (30.77%), symmetric in 73 (62.37%), bilateral in 107 (91.45%), unilateral in 2 (1.71%), and no conduction and/or mixed hearing loss was encountered. Eight (6.83%) patients presented vertigo, 24 (20.51%) tinnitus. Tympanogram type A presented in 88.90% in the right ear and 91.46% in the left ear, with 5.98 to 10.25% type As. Stapedius reflex was present in 75.3 to 85.2%. Speech discrimination in the left ear was significantly different (p = 0.02)in the group older than 50 years. No association was found regarding markers of disease activity, but there was an association with the onset of rheumatoid arthritis disease.ConclusionsPatients with rheumatoid arthritis had a high prevalence of sensorineural hearing loss for high and very high frequencie

Efectividad de 5-fluoruracilo y vinorelbina en pacientes multitratadas por cáncer de mama metastásico

Objetivo. Evaluar la actividad y toxicidad de fluoruracilo en infusión continua y vinorelbina en segunda o tercera línea de tratamiento del cáncer de mama metastásico (CMM). Método y pacientes. En este estudio fase II se incluyeron 24 pacientes que habían recibido doxorrubicina y/o paclitaxel. Se administró 5-fluoruracilo a 1g/m2/día en infusión continua por 3 días y vinorelbina a 30 mg/m2 D1 cada 21 días por 6 ciclos. Resultados. Las respuestas globales observadas fueron del 37,5% (12,5% respuestas completas). El período libre de enfermedad se calculó una media de 6,33 ± 8,12 meses (IC 95% de 3,43 meses). Se observó toxicidad en el 12,5% de las pacientes y no se registró toxicidad grave ni muertes relacionadas a tratamiento. Conclusión. El 5-fluoruracilo/vinorelbina a las dosis administradas es un esquema efectivo en pacientes con CMM multitratadas, con un bajo perfil de toxicidad y costo

Identificación de Requisitos Legales Ambientales en una Empresa de Manufactura en Matamoros, Tamaulipas

The main objective of this article is to identify the environmental legal requirements of a rubber hose manufacturing company, in the city of H. Matamoros, Tamaulipas; through a bibliographic review of current environmental legislation in its three types of jurisdictions: federal, state, and local. Having the requirements identified, a matrix of legal requirements is created (own creation) that allows planning compliance with them, being in accordance with the competent authorities, avoiding sanctions or fines and most importantly: controlling and reducing pollution of the productive processes.El objetivo principal del presente artículo es identificar los requisitos legales ambientales de una empresa de manufactura de mangueras de hule, en la ciudad de H. Matamoros, Tamaulipas; mediante la revisión bibliográfica la legislación ambiental vigente en sus tres tipos de competencia: federal, estatal y local. Al tener los requisitos identificados se constituye una matriz de requisitos legales (creación propia) que permite realizar la planeación del cumplimiento de los mismos, estando en concordancia con las autoridades competentes, evitando sanciones o multas y lo más importante: controlar y disminuir la contaminación de los procesos productivos