Abstract
Background
Coexistence of Fabry disease and IgA nephropathy is rare. Moreover, the coexisting Fabry disease may be unrecognized due to unapparent clinical manifestations.
Method
We described two cases with coexisting Fabry disease and IgA nephropathy. The clinicopathological features of these two patients were studied.
Results
A 54-year-old male presented with proteinuria, hematuria, and hypertension, and a 33-year-old male presented with proteinuria without clinical signs or family history of Fabry disease. Both of them were diagnosed with IgA nephropathy at admission, whereas Fabry disease was not suspected. Subsequent immunofluorescent study confirmed the diagnosis of IgA nephropathy by showing positive staining for IgA and complement C3 in the mesangium. Meanwhile, light microscopy showed remarkable vacuolation of podocytes with mild mesangial expansion, which was characteristic of Fabry nephropathy. Further examination of toluidine blue-stained semi-thin sections and electron microscopy demonstrated blue bodies and myelin figures in the cytoplasm of podocytes, respectively. The diagnosis of coexisting Fabry disease was finally established based on deficient α-galactosidase A activity in both patients.
Conclusion
This case study is an important reminder of the role of kidney biopsy as an indicator of Fabry disease and its rare coexistence with IgA nephropathy.
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Yin, G., Wu, Y., Zeng, CH. et al. Coexistence of Fabry disease and IgA nephropathy: a report of two cases. Ir J Med Sci 183, 671–675 (2014). https://doi.org/10.1007/s11845-014-1161-9
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DOI: https://doi.org/10.1007/s11845-014-1161-9