FOXI1 immunohistochemistry differentiates benign renal oncocytoma from malignant chromophobe renal cell carcinoma

Background/Aim: Renal oncocytoma (RO) and chromophobe renal cell carcinoma (chRCC) are suggested to develop from α- and β-intercalated (IC) cells of the collecting duct expressing solute carrier family 4 member 1 (SLC4A1) and SLC26A4 under control of forkhead box 1 (FOXI1) transcription factor. The...

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Hauptverfasser: Molnár, Ágnes (VerfasserIn) , Kovacs, Gyula (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2019
In: Anticancer research
Year: 2019, Jahrgang: 39, Heft: 6, Pages: 2785-2790
ISSN:1791-7530
DOI:10.21873/anticanres.13405
Online-Zugang:Verlag, Volltext: https://doi.org/10.21873/anticanres.13405
Verlag, Volltext: http://ar.iiarjournals.org/content/39/6/2785
Volltext
Verfasserangaben:Agnes Molnar, Csenge Anna Horvath, Petra Czovek, Arpad Szanto and Gyula Kovacs

MARC

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520 |a Background/Aim: Renal oncocytoma (RO) and chromophobe renal cell carcinoma (chRCC) are suggested to develop from α- and β-intercalated (IC) cells of the collecting duct expressing solute carrier family 4 member 1 (SLC4A1) and SLC26A4 under control of forkhead box 1 (FOXI1) transcription factor. The aim of this study was to clarify the possible cellular origin and of RO and chRCC. Materials and Methods: Immunohistochemistry for aquaporin 2 (AQP2), FOXI1, SLC4A1 and SLC16A4 was applied to distinct types of renal cell tumors. Results: Nuclear FOXI1 staining occurred in 96% of 83 ROs, in 3% of 90 chRCCs and none of the other tumor types. The α-IC cell marker SLC4A1 was seen in 60% of RO and 11% of chRCC, whereas staining for the β-IC cell marker SLC26A4 was negative in all but one tumor. Conclusion: Although the origin of RO remains unclear, our findings suggest that FOXI1 immunohistochemistry is useful in differential diagnosis of RO from chRCC with overlapping histology. 
650 4 |a chromophobe renal cell carcinoma 
650 4 |a differential diagnosis 
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650 4 |a immunohistochemistry 
650 4 |a Renal oncocytoma 
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