IgA nephropathy has all the following characteristics except -
Hematuria
Hypeension
Nephritic syndrome
Thin basement membrane on renal biopsy
Histologically, the lesions in IgA nephropathy vary considerably. The glomeruli may be normal or may show mesangial widening and segmental inflammation confined to some glomeruli (focal proliferative GN); diffuse mesangial proliferation (mesangioproliferative GN); or (rarely) ove crescentic GN. The characteristic immunofluorescence picture is of mesangial deposition of IgA, often with C3 and properdin and smaller amounts of IgG or IgM. Ref: Robbins basic pathology 9th edition page 530
Urinary tract