Disseminated histoplasmosis with glomerulonephritis mimicking Wegener's granulomatosis.

Renal complications of disseminated histoplasmosis include chronic recurrent abcesses of the interstitium and urogenital tract. To our knowledge, glomerulonephritis has never been reported in histoplasmosis. We describe a case of proven histoplasmosis presenting with oral granulomatous ulceration and segmental glomerulonephritis that mimicked Wegener's granulomatosis (WG). All symptoms and renal parameters remitted under itraconazole treatment alone. In conclusion, glomerulonephritis may complicate the course of chronic disseminated histoplasmosis. Since it can masquerade as WG, systematic tissue staining for intracellular microorganisms should be done when WG is suspected.