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Artículo Tomo 70, Número. 9, Noviembre 2017

Archivos Españoles de Urología

Adenoma metanephric: Report of 2 cases and bibliographic review.

Authors: Enrique Rodríguez-Zarco, Ana Vallejo-Benítez, Francisco Javier Farfán-López, Ángel Vilches-Arenas, Sofía Pereira-Gallardo y Francisco Javier Vázquez- Ramírez.

Arch. Esp. Urol. 2017; 70 (9): 792-796

Vol. 70, Number. 9, November 2017

OBJECTIVE: Two cases of metanephric adenoma are presented, a rare benign renal tumor, and a literature review is done under the current WHO classification (2016).

METHODS: Standard histopathological study was performed with hematoxylin-eosin and immunohistochemistry to analyze the expression of WT, Vimentin, Racemase, CK7, CD10 and RCC.

RESULTS: Neoplasms of 3 and 4.5 cm, histologically, exhibiting tubulopapillary architecture. There was no evidence of significant nuclear atypia and mitotic figures. Immunohistochemical study showed positive immunoreaction for WT1 and Vimentin in tumor cells.

CONCLUSIONS: Two new cases of metanephric adenoma are presented and a review of the literature was performed in order to discuss the prognosis and differential diagnosis of metanephric adenoma. This is a rare tumor and its diagnosis lies on its morphology and its immunohistochemical profile.

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