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Journal Information
Vol. 33. Issue 4.
Pages 439-442 (January 2009)
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Vol. 33. Issue 4.
Pages 439-442 (January 2009)
Mielolipoma extraadrenal retroperitoneal
Extraadrenal retroperitoneal myelolipoma
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Paula Bartumeus Martínez1
Corresponding author
bartumeus_pau@gva.es

Correspondencia autor: Dra. Paula Bartumeus Martínez Servicio de Radiodiagnóstico. Hospital Universitario Doctor Peset Avda. Gaspar Aguilar, 90 - 46017 Valencia Tel.: 963 862 500
, Tomás Ripollés González
Servicio de Radiodiagnóstico. Hospital Universitario Doctor Peset. Valencia, España
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Resumen

Los mielolipomas extraadrenales son tumores benignos raros cuya diferenciación de otros tumores de partes blandas que contienen grasa puede resultar difícil. Presentamos el caso de un mielolipoma retroperitoneal adyacente al hilio renal orientado inicialmente según hallazgos en imagen como liposarcoma obteniendo el diagnóstico definitivo tras la cirugía. Las características de estos tumores en TC, ecografía y RM pueden variar en función del componente mayoritario del mismo. La RM con supresión-grasa y en fase-opuesta supone la mejor herramienta diagnóstica para demostrar el componente graso. La confirmación histológica previa puede ayudar a una mejor planificación quirúrgica en la mayoría de los casos.

Palabras clave:
Mielolipoma
Retroperitoneo
Tumor retroperitoneal
Neoplasia retroperitoneal
Abstract

Extraadrenal myelolipomas are rare benign tumors and differentiating them from other soft tissue tumors containing fat can be difficult. A retroperitoneal myelolipoma adjacent to right renal helium is presented in this case-report. Initially oriented as liposarcoma, the final diagnosis was obtained after surgery. Computed tomography (CT), ultrasound (US) and magnetic resonance imaging (MRI) features may vary according to the major component of the tumor. MRI with fat suppression and opposed-phase imaging are the best imaging tools to demonstrate the adipose tissue. A histological confirmation may allow a better presurgical planification in most cases.

Key words:
Mylolipoma
Retroperitoneum
Retroperitoneal tumor
Retroperitoneal neoplasm

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