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Inicio Acta Otorrinolaringológica Española Tumor neuroectodérmico primitivo periférico/ sarcoma de Ewing extraóseo del h...
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Vol. 56. Issue 1.
Pages 38-40 (January 2005)
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Vol. 56. Issue 1.
Pages 38-40 (January 2005)
Tumor neuroectodérmico primitivo periférico/ sarcoma de Ewing extraóseo del hueso temporal
Primitive neuroectodermal tumor/Extraosseus Ewing Sarcoma of the temporal bone
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R. Souvirón Encaboa
Corresponding author
liasouviron@hotmail.com

Rosalía Souvirón Encabo. Tutor 51, 2º derecha. 28008 Madrid
, O. Arenas Britez, R. Gil, E. Pérez-Luengo, B. Scola Yurrita
Hospital General Universitario Gregorio Marañón. Madrid
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Resumen

El término tumor neuroectodérmico primitivo (PNET) se incluye dentro de un grupo de neoplasias formado por “células redondas azules de pequeño tamaño” que derivan de la cresta neural y de ahí su carácter neuroectodérmico. Es uno de los tipos histológicos más indiferenciados de tumores malignos. Dentro de esta familia de tumores destaca el Sarcoma de Ewing, que aparece fundamentalmente en estructuras óseas, disminuyendo su probabilidad en estructuras extraóseas. Presentamos un caso atípico de pPNET/Sarcoma de Ewing extraóseo que ocupaba el CAE e infiltraba el hueso temporal. Para el control de la enfermedad, el enfoque preferido es la cirugía más ra dioquimioterapia

Palabras clave:
Tumor neuroectodérmico primitivo
Sarcoma de Ewing en cabeza
cuello
Afectación de CAE
hueso temporal
Abstract

The term primitive neuroectodermal tumor (PNET) should be included in the differential diagnosis of small round blue cell tumors, which come from the neural crest and explain their neuroectodermal character. This is one of the most indifferentiated histological types of malignant tumors. In the PNET family, we high light the Ewing´s Sarcoma, that is frecuently located in bony sites and has a less frequent localization in soft tissues. We focus on one atypic case of PNET/ Extraosseus Ewing´s Sarcoma that involves the external auditory canal and infiltrates the temporal bone. Surgery followed by postoperative chemotherapy and radiation offers the best local control of the disease

Key words:
Primitive neuroectodermal tumor
Ewing´s sarcoma of head
neck
External auditory canal
temporal bone infiltration

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