Información del artículo
Los tumores neuroendocrinos son un proceso patológico infrecuente y de difícil diagnóstico. Su pequeño tamaño y su localización, principalmente en el páncreas o en la pared gastroduodenal, hacen que habitualmente no sean visibles con las técnicas de imagen convencional (ecografía percutánea y tomografía computarizada [TC]). Se han utilizado diversas técnicas de imagen en la localización de estos tumores: resonancia magnética nuclear (RMN), arteriografía, escintigrafía. En este artículo revisamos el papel de la ultrasonografía endoscópica (USE) o ecoendoscopia en la localización de estos tumores. La USE es capaz de visualizar detalladamente todo el páncreas y la pared gastroduodenal, lo que permite la localización y la determinación de la extensión locorregional del tumor. Además la posibilidad de realizar punción aspirativa con aguja fina (PAAF) mediante USE permite obtener el diagnóstico histológico e inmunohistoquímico de confirmación.
Palabras clave:
Ultrasonografía endoscópica
Tumores neuroendocrinos
Neuroendocrine tumors are rare lesions that are frequently difficult to diagnose. Because of their small size and their localization, mainly in the pancreas or the gastric and duodenal wall, they are often not visible with conventional imaging procedures (percutaneous ultrasonography and computed tomography). Several imaging modalities such as magnetic resonance, angiography and scintigraphy have been used to identify these tumors. We review the role of endoscopic ultrasonography (EUS) in the localization of these tumors. EUS allows detailed visualization of the entire pancreas and gastric and duodenal wall, providing localization and determination of local tumour invasion. Furthermore, EUS allows fine needle aspiration to be performed for cytologic and immunohistochemical diagnosis.
Key words:
Endoscopic ultrasonography
Neuroendocrine tumors
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