Fibrillary and immunotactoid glomerulopathies.

There is sufficient clinical and morphological evidence to suggest that Fibrillary Glomerulonephritis (FGN) and Immunotactoid (IT) Glomerulopathy are two different diseases. Is still open to debate if IT glomerulopathy is a distinct entity or is strictly associated with a spectrum of systemic syndromes ("forme fruste" of Cryoglobulin and paraprotein associated diseases). Further studies about pathogenetic mechanisms of fibril or microtubule formation may allow a better understanding of these diseases.