Metanephric adenoma with BRAF V600K mutation and a doubtful radiological imaging: pitfalls in the diagnostic process

N. Lenci, P. Francesco, E. Scarciglia, V. Fiorentino, M. Schino, G. Palermo, Marco Racioppi, P. Bassi, M. Martini*

*Autore corrispondente per questo lavoro

Risultato della ricerca: Contributo in rivistaArticolo

Abstract

Metanephric adenoma (MA) is an uncommon benign renal tumor whose histomorphological aspect resembles that of Wilms’ tumor and papillary renal cell carcinoma. From a diagnostic and therapeutic perspective, recognition of this entity is important as it has a more favorable clinical outcome compared with Wilms’ tumor and papillary renal cell carcinoma. MA should not be treated with nephrectomy if the tumor size is small, opting for a conservative treatment. However, the preoperative diagnosis of this disease is extremely challenging. The present study describes a case of this rare disease, showing an ambiguous radiological imaging and that only after a percutaneous biopsy, was defined as a MA and treated with partial nephrectomy. Moreover, the histological diagnosis of this case was partially complicated by the equivocal immunohistochemical analysis showing negativity for BRAF VE1 staining. Only the mutational analysis demonstrated the presence of the BRAF V600K mutation (for the first time described in a case of metanephric adenoma), highlighting the necessity of sequencing in case of MA with negativity for BRAF VE1 clone.
Lingua originaleInglese
pagine (da-a)1-5
Numero di pagine5
RivistaMedical Molecular Morphology
Numero di pubblicazione11
DOI
Stato di pubblicazionePubblicato - 2020

All Science Journal Classification (ASJC) codes

  • Anatomia Patologica e Medicina Forense
  • Biologia Molecolare

Keywords

  • BRAF V600K
  • BRAF VE1 antibody
  • Metanephric adenoma

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