Podocyte Infolding Glomerulopathy (PIG) in a Patient With Undifferentiated Connective Tissue Disease: A Case Report

Podocyte infolding glomerulopathy (PIG) is a recently described pathologic entity characterized by diffuse podocyte infolding into the glomerular basement membrane (GBM) associated with ultrastructurally demonstrable microspherular aggregates. The clinical features, significance, and pathogenesis of this condition are still not well delineated because only a few cases have been documented to date, all from Japan. We report a case of PIG associated with undifferentiated connective tissue disease in an Indian woman who presented with nephrotic syndrome while undergoing treatment for an autoimmune disorder.

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