Takayasu Arteritis: What Can Go Wrong in The Glomeruli for Large Vessel Vasculitis? A Case Report of an Unusual Cause of Persistent Microscopic Hematuria in a Patient with Takayasu Arteritis

We describe a case of persistent microscopic hematuria in a patient with Takayasu arteritis (TA). Urological cause has been excluded. Classically, TA is found to only involve large arteries like the aorta and its branches. There is some evidence that showed the association of small vessel vasculitis like glomerulonephritis with TA. Histopathological studies showed similar features of vasculitis between the small and large vessel involvement in TA. This may explain the similar disease process that has not been well understood in TA. We believe that the persistent microscopic haematuria in the patient described is caused by TA associated glomerulonephritis. A series of investigations ruled out other causes of glomerular microscopic haematuria like autoimmune or infection related glomerulonephritis.