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Journal Information
Vol. 43. Issue 8.
Pages 403-408 (January 2001)
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Vol. 43. Issue 8.
Pages 403-408 (January 2001)
Manifestaciones radiológicas típicas y atípicas del oncocitoma renal*
Typical and atypical radiologicalmanifestations of renal oncocytoma
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6382
Pilar Bernáldez
,**
, María del Alcázar Iriborreu**, Manuel Luis Rodríguez**, Manuel Martínez-Moya**, Alberto Rodríguez*, Silvia Navarro**
* Servicio de Oncología. Hospital Universitario «Virgen del Rocío». Sevilla
** Servicio de Radiodiagnóstico. Hospital Universitario «Virgen del Rocío»
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Objetivos

Valorar los hallazgos radiológicos [Rx convencional, urografía intravenosa (UIV), ecografía y tomografía computarizada (TC)] de los oncocitomas renales, y determinar si presentan rasgos propios que nos permitan diferenciarlos del carcinoma de células renales (CCR).

Material y método

Estudiamos de manera retrospectiva ocho enfermos diagnosticados de oncocitoma renal, analizando las características que presentaron en la radiografía simple y UIV, ecografía y TC sin y con contraste i.v.

Resultados

Las masas eran bien delimitadas en siete casos y mal delimitadas en uno, siendo homogéneas en cuatro ocasiones y heterogéneas en dos. Las dos restantes fueron homogéneas, salvo por la presencia de una cicatriz central. Dos lesiones mostraron un comportamiento biológico agresivo, coincidiendo con signos sugestivos de malignidad desde el punto de vista radiológico.

Conclusiones

La cicatriz fibrosa en un hallazgo típico pero infrecuente de oncocitoma renal, que detectamos únicamente mediante TC. No es posible diferenciarlos de lesiones agresivas exclusivamente mediante técnicas de imagen, aunque existen hallazgos orientativos.

Palabras clave:
Oncocitoma
Neoplasia renal
TC
Radiología
Objectives

Asses the Radiologic findings [conventional X-ray, intravenous urography (IU.), ultrasonography and computerized tomography (CT)] of the renal oncocytomas and determine if there are characteristics that allow us to differentiate them from renal cell carcinoma (RCC).

Material and method

We performed a retrospective study of eight patients diagnosed of renal oncocytoma, analyzing the characteristics found in the plain radiography and IVU, ultrasonography and CT without and with i.v. contrast.

Results

The masses were well defined in seven cases and poorly defined in one, and were homogeneous on four occasions and heterogeneous on two. The remaining two were homogeneous, except for the presence of a central scar. Two lesions showed and aggressive biological behavior, coinciding with signs suggestive of malignancy from the radiological point of view.

Conclusions

The fibrous scar is a typical but infrequent findings in renal oncocytoma that we can only detect by CT. It is not possible to differentiate it from aggressive lesions with imaging techniques, although orientative findings exist.

Key words:
Oncocytoma
Renal Neoplasia
CT
Radiology

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