... epithelial cells. C: Glomerular sclerosis demonstrated with a periodic acid methenamine (PAM) silver stain. D: Interstitial chronic inflammation and dilated tubules with casts. The histopathology of HIVAN is a collapsing glomerulopathy and associated tubulointerstitial disease. There is collapse...

... of parvovirus B19 infection. These include virus-associated hemophagocytic syndrome, pancytopenia, myocarditis, glomerulopathy, hepatitis, aseptic meningitis, encephalitis, and vasculitis. Pathologic Findings Parvovirus B19 skin lesions usually have nonspecific histologic features, which include superficial...

... syndromes ( Table 1-2 ) ( 5 – 9 ). The WT1 gene, located on chromosome 11p13, is involved in the pathogenesis of WAGR syndrome (Wilms tumor associated with aniridia, genitourinary anomalies, and intellectual disability) and the Denys-Drash syndrome (pseudohermaphroditism, severe glomerulopathy...