Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 43
Filter
1.
Rev. otorrinolaringol. cir. cabeza cuello ; 77(4): 431-434, dic. 2017. ilus
Article in Spanish | LILACS | ID: biblio-902799

ABSTRACT

Los meningiomas son los tumores no gliales más comunes del sistema nervioso central constituyendo el 24%-30% de los tumores intracraneales y el 25% de los tumores de médula espinal. Se originan de células de la aracnoides y en general presentan un comportamiento benigno. Existe un subtipo llamado meningioma extracraneal primario o extradural que es poco frecuente y afecta principalmente el área de cabeza y cuello. Debido a su baja prevalencia y síntomas poco característicos son a menudo diagnosticados por fortuna, siendo la inmunohistoquímica fundamental. Se presenta el caso de una mujer adulta con una lesión tumoral en oído medio diagnosticada inicialmente mediante una biopsia incisional como un granuloma de colesterol. Luego del tratamiento quirúrgico y estudio de inmunohistoquímica se concluye el diagnóstico definitivo de meningioma extradural de oído medio. Se analiza la literatura al respecto y se discute sobre su epidemiología, clínica, estudio y manejo.


Meningiomas are the most common non-glial tumors of the central nervous system constituting 24-30% of intracranial tumors and 25% of spinal cord tumors. They originate from arachnoid cells and generally exhibit benign behavior. The subtype primary extracranial meningioma or extradural meningioma that is uncommon and affects the head and neck area. Due to their low prevalence and uncharacteristic symptoms are often diagnosed by fortune, being the immunohistochemistry fundamental. We present the case of an adult woman with a tumor lesion in the middle ear initially diagnosed by an incisional biopsy such as a cholesterol granuloma. After the surgical treatment and immunohistochemical study, the definitive diagnosis of extradural meningioma of the middle ear is concluded. The literature on this subject is analyzed and its epidemiology, clinical practice, study and management are discussed.


Subject(s)
Humans , Female , Middle Aged , Ear Neoplasms/surgery , Ear Neoplasms/diagnosis , Meningioma/surgery , Meningioma/diagnosis , Ear Neoplasms/pathology , Immunohistochemistry , Treatment Outcome , Ear, Middle/pathology , Meningioma/pathology
3.
Rev. otorrinolaringol. cir. cabeza cuello ; 76(2): 209-214, ago. 2016. ilus, tab
Article in Spanish | LILACS | ID: lil-793968

ABSTRACT

El carcinoma escamoso de conducto auditivo externo es poco frecuente. La sintomatología puede semejar una otitis externa u otitis media crónica, lo que puede retrasar el diagnóstico. La falta de un sistema de clasificación y el número limitados de casos hace difícil la elaboración de guías de tratamiento. Se describe una serie de casos de esta neoplasia, asf como una revisión de la literatura actual.


Squamous cell carcinoma of the external auditory canal is rare. The symptoms may resemble an external otitis or chronic otitis media, which can delay diagnosis. The lack of a classification system and the limited number of cases makes it difficult the development of treatment guidelines. We present a case series of this neoplasia, as well as a review of the literature.


Subject(s)
Humans , Male , Aged , Aged, 80 and over , Ear Neoplasms/diagnosis , Ear Neoplasms/therapy , Carcinoma, Squamous Cell/diagnosis , Carcinoma, Squamous Cell/therapy , Ear, External , Temporal Bone , Ear Neoplasms/pathology , Carcinoma, Squamous Cell/pathology
4.
Rev. Hosp. Ital. B. Aires (2004) ; 36(2): 53-58, jun. 2016. graf, ilus
Article in Spanish | LILACS | ID: biblio-1147222

ABSTRACT

El pabellón auricular y el conducto auditivo externo constituyen una región anatómica que puede ser asiento de múltiples patologías, entre ellas procesos inflamatorios, infecciosos y neoplásicos, tanto benignos como malignos. Con respecto a los tumores, los diversos tipos suelen presentarse con síntomas y signos similares y en general es difícil inferir la variedad histológica del tumor a través del examen físico, por lo cual es necesario el estudio histopatológico para determinar el diagnóstico. La mayoría de los tumores del oído externo son carcinomas; entre ellos se destacan el carcinoma basocelular, el más frecuente, y el carcinoma espinocelular. Menos frecuentemente se encuentran otros tipos de tumores como los melanomas, adenocarcinomas, carcinomas de glándulas ceruminosas, carcinomas mucoepidermoides, sarcomas, procesos linfoproliferativos, etc. Suelen ocurrir en la edad media y avanzada (50-70 años) y con mayor periodicidad en el sexo masculino. En el presente trabajo se describe un caso clínico de carcinoma espinocelular del oído externo, tratado exitosamente mediante cirugía y radioterapia, así como también se describen las características clínicas de esta enfermedad, con especial atención al compromiso del oído externo por ella.


The pinna and the ear canal are an anatomical region that can be affected by many diseases, including inflammatory, infectious and benign and malignant neoplastic processes. With regard to tumors, various types usually present with similar symptoms and usually is very difficult to know the histological type through physical examination, so histopathological examination is necessary in order to determine the diagnosis. Most tumors are carcinomas; they can be basal cell carcinoma (more frequently), or squamous carcinoma. Less frequently are other types of tumors such as melanomas, adenocarcinomas, ceruminous glands carcinomas, mucoepidermoid carcinomas, sarcomas, lymphoproliferative disorders, etc. They usually present in middle and advanced age people (50-70 years) and are more frequently in men. In this article we present a case of squamous cell carcinoma of the external ear with extention to parotid gland, successfully treated with surgery and radiotherapy, as well as we describe the clinical characteristics of this disease, with special attention to the compromise of the external ear. (AU)


Subject(s)
Humans , Male , Middle Aged , Ear Neoplasms/diagnosis , Carcinoma, Squamous Cell/diagnosis , Ear, External/pathology , Ear Neoplasms/surgery , Ear Neoplasms/classification , Ear Neoplasms/drug therapy , Ear Neoplasms/radiotherapy , Carcinoma, Squamous Cell/surgery , Carcinoma, Squamous Cell/history , Carcinoma, Squamous Cell/drug therapy , Carcinoma, Squamous Cell/radiotherapy , Immunosuppressive Agents/therapeutic use
5.
Rev. panam. salud pública ; 37(1): 38-43, Jan. 2015. ilus, tab
Article in English | LILACS | ID: lil-742275

ABSTRACT

Objective. To identify the intangible elements that characterize the successful effort to fight Chagas disease in the Americas, determine how they contributed to the overall success of the partnership, and learn lessons from the experience that could be applied to other programs. Methods. This study was based on the Partnership Assessment Tool (PAT) developed by the Nuffield Institute for Health ("the Institute") at the University of Leeds (London). The PAT draws heavily on scientific literature and the extensive experience of sociologists and health experts working for the Institute. The Pan American Health Organization (PAHO) modified the tool slightly to adapt it to its needs and provide a general structure for the study. The six key principles of the PAT framework were applied in the design of the research questionnaires. Results. The findings show that a successful collaboration requires a clear objective; a good-quality pool of data; and comprehensive qualitative and quantitative knowledge of the problem, its dimensions, and its impact. The collaboration was elaborated from a common idea and a shared, quantified plan based on data gathered by independent scientists plus a strategy with explicit milestones. The clarity of purpose allowed for an improved synergy of efforts and made it possible to resolve differences in opinions and approaches. Conclusions. PAHO's experience with effective collaborations such as the joint initiative to fight Chagas disease provides a rich knowledge base for analysis of the advantages, limitations, and paradigms of community involvement, collaborative practices, and partnerships.


Objetivo. Establecer los elementos intangibles que caracterizan la exitosa iniciativa para combatir la enfermedad de Chagas en la Región de las Américas, determinar cómo contribuyeron al éxito general de la alianza y extraer enseñanzas de la experiencia que podrían ser aplicadas a otros programas. Métodos. Este estudio se basó en la Herramienta de Evaluación de Alianzas (PAT, por sus siglas en inglés: Partnership Assessment Tool) creada por el Nuffield Institute for Health ("el Instituto") de la Universidad de Leeds (Londres). La PAT utiliza en gran medida la bibliografía científica y la vasta experiencia de los sociólogos y expertos en salud que trabajan para el Instituto. La Organización Panamericana de la Salud (OPS) modificó ligeramente la herramienta para adaptarla a sus necesidades y proporcionar una estructura general para el estudio. En el diseño de los cuestionarios de investigación, se aplicaron los seis principios clave del marco de la PAT. Resultados. Los resultados indican que una colaboración exitosa requiere un objetivo claro; una base de datos de buena calidad; y un conocimiento exhaustivo cualitativo y cuantitativo del problema, sus dimensiones y su repercusión. La colaboración se elaboró a partir de una idea común y un plan compartido y cuantificado basado en datos recopilados por científicos independientes, junto a una estrategia con hitos explícitos. La claridad de los objetivos permitió una mejor sinergia de las iniciativas e hizo posible la resolución de las diferencias de opiniones y enfoques. Conclusiones. La experiencia de la OPS en materia de colaboraciones eficaces, como la iniciativa conjunta para combatir la enfermedad de Chagas, proporciona una rica base de conocimientos para analizar las ventajas, las limitaciones y los paradigmas de la participación comunitaria, las prácticas colaborativas y las alianzas.


Subject(s)
Humans , Ear Neoplasms/diagnosis , Ear, Inner/pathology , Magnetic Resonance Imaging/methods , Petrous Bone/pathology , Petrous Bone , Skull Base Neoplasms/diagnosis , Tomography, X-Ray Computed/methods , Diagnosis, Differential , Ear, Inner
6.
Rev. otorrinolaringol. cir. cabeza cuello ; 74(3): 245-248, dic. 2014. ilus
Article in Spanish | LILACS | ID: lil-734848

ABSTRACT

Las neoplasias primarias de oído medio son poco frecuentes y más aún lo es el adenoma de oído medio. Se plantea que el tumor se origina de células pluripotenciales endodérmicas indiferenciadas que están presentes en la mucosa. El adenoma carcinoide está compuesto por dos tipos de células: exocrinas y neuroendocrinas, estas últimas son capaces de liberar granulaciones y neuropéptidos que se detectan en la inmunohistoquímica. La mayoría se presentan con síntomas vagos de la esfera otológica, siendo raras las manifestaciones sistémicas de síndrome carcinoide. No existe examen físico característico ni patrón imagenológico. Se debe hacer diagnóstico diferencial con colesteatoma y otros tumores de oído medio. El diagnóstico definitivo es anatomopatológico y el tratamiento de elección es quirúrgico dado el potencial destructivo local. Se presentan en este artículo dos casos de adenoma carcinoide de oído medio.


Primary neoplasms of the middle ear are rare and even more so is the middle ear adenoma. It is stated that the tumor originates from undifferentiated endodermal stem cells that are present in the mucosa. Carcinoid adenoma is compromised of two cell types; exocrine and neuroendocrine cells, the latter are able to release neuropeptides and granulations that can be detected in immunohistochemistry. Most cases present with vague symptoms of the otologic sphere, being less common the systemic manifestations of carcinoid syndrome. There is no physical examination or characteristic imaging pattern. Differential diagnosis must be done with cholesteatoma and other middle ear tumors. The definitive diagnosis is anatomopathological and the treatment of choice is surgery given the local destructive potencial. Two cases of middle ear carcinoid adenoma are presented in this article.


Subject(s)
Humans , Male , Female , Adult , Ear Neoplasms/diagnosis , Carcinoid Tumor/diagnosis , Adenoma/diagnosis , Ear, Middle/pathology , Ear Neoplasms/surgery , Carcinoid Tumor/surgery , Adenoma/surgery , Diagnosis, Differential
9.
Korean Journal of Radiology ; : 812-815, 2012.
Article in English | WPRIM | ID: wpr-39911

ABSTRACT

We report a case of malignant melanoma of Eustachian tube with extension to the middle ear cavity and nasopharynx in a 51-year-old woman who presented with right ear fullness. Computed tomography showed a soft tissue mass in the middle ear cavity and causedthe widening and eroding of the bony eustachian tube. Magnetic resonance imaging showed well enhancing mass in eustachian tube extending nasopharynx to middle ear cavity. A biopsy of the middle ear cavity mass revealed a malignant amelanotic melanoma.


Subject(s)
Female , Humans , Middle Aged , Ear Neoplasms/diagnosis , Ear, Middle/pathology , Eustachian Tube , Magnetic Resonance Imaging , Melanoma/diagnosis , Nasopharynx/pathology , Neoplasm Invasiveness , Tomography, X-Ray Computed
14.
Rev. otorrinolaringol. cir. cabeza cuello ; 67(3): 250-254, dic. 2007. ilus, tab
Article in Spanish | LILACS | ID: lil-480505

ABSTRACT

Se presentan dos casos clínicos del Departamento de Otorrinolaringología de la Pontificia Universidad Católica de Chile, con diagnóstico de lipoma del conducto auditivo interno (CAí). Los lipomas del CAí son neoplasias benignas poco frecuentes, con una frecuencia de 0,15 por ciento de los tumores del CAL Se presentan principalmente entre la tercera y quinta década de la vida, en su mayoría hombres caucásicos. Clínica y audiológicamente son indistinguibles de otros tumores de la misma zona, siendo el neurinoma del acústico (schwanoma vestibular) el tumor más frecuente en el CAí (90 por ciento). Las Imágenes de resonancia magnética permiten realizar el diagnóstico específico de lipoma. El tratamiento quirúrgico ha sido desplazado por el manejo conservador, dado que los lipomas tienen crecimiento lento, sin trasformación maligna, en general, junto con difícil técnica quirúrgica por infiltración a estructuras adyacentes. Sólo estaría indicada la cirugía en casos que exista crecimiento tumoral durante el seguimiento o en pacientes con síntomas intensos y progresivos.


Two case reports with diagnosis of internal auditory canal lipomas are presented. Lipomas of the internal auditory canal are benign neoplasms, making up 0.15 percent of all tumors in this area. They occur more frequently in the third to fifth decade of life predominantly in Caucasian males. The are clinically and audiologically indistinguishable from other tumors in this region, with eighth cranial nerve schwannomas (vestibular schwannomas) being the most common I AC tumor (90 percent). MRI findings allow for specific diagnosis of a lipoma. Regarding treatment, surgery has been displaced by a conservative treatment of this rare lesion. Lipomas are slow growth lesions, without malignant transformation, and with inherent difficulties to their removal because of the adipose tissue infiltrating the nerve, as well as only partial resolution of symptoms in most cases. Surgery could only be indicated when relevant and disabling symptoms are present.


Subject(s)
Humans , Male , Middle Aged , Lipoma/diagnosis , Ear Neoplasms/diagnosis , Ear, Inner/pathology , Magnetic Resonance Imaging
17.
J Indian Med Assoc ; 2007 May; 105(5): 268, 277
Article in English | IMSEAR | ID: sea-101135

ABSTRACT

Neurilemmoma in postaural region arising from great auricular nerve is an extremely rare tumour. An 11 years boy presented with pain and swelling behind his left ear for last 3-4 years. The clinical examination revealed the swelling appeared to be diffuse with the margin being ill defined. On radiological examination a diffuse homogeneous mass was seen in the postaural region of the left side. The tumour was completely removed by an incision through postaural route. Histopathological study revealed neurilemmoma. Postoperative period was uneventful.


Subject(s)
Child , Ear Neoplasms/diagnosis , Humans , Male , Neurilemmoma/diagnosis
20.
Indian J Pathol Microbiol ; 2006 Oct; 49(4): 587-9
Article in English | IMSEAR | ID: sea-74234

ABSTRACT

Adenoid cystic carcinoma of the external auditory canal (EAC) is a very rare malignant tumor and its diagnosis is frequently missed because of the superficial nature of biopsies. A 30 year old male presented with 6 months history of recurrent painful right ear discharge. On examination there was a nodule of 2 cms in diameter. The microscopic examination of the punch biopsy specimen of tumor revealed typical features of an adenoid cystic carcinoma. While reporting the biopsies of external auditory canal one should keep the adenoid cystic carcinoma as one of the possible differentials, especially if the biopsy is superficial, problem is recurrent and histopathological features suggest the granulation tissue.


Subject(s)
Adult , Carcinoma, Adenoid Cystic/diagnosis , Cerumen , Ear Canal/pathology , Ear Neoplasms/diagnosis , Humans , Male , Sweat Gland Neoplasms/diagnosis
SELECTION OF CITATIONS
SEARCH DETAIL