Unusual renal vascular adaptations in childhood Takayasu arteritis: a CT angiographic demonstration of extensive collaterals and aberrant arteries.

A young Indian male with Takayasu arteritis presented with resistant hypertension and bilateral renal artery stenosis.

• The patient is described as a young Indian male, which is noted as unusual since TA typically affects young females.
• The patient had resistant hypertension as a primary clinical manifestation.
• Bilateral renal artery stenosis was identified as the underlying vascular pathology.
• The case represents a rare constellation of findings, particularly in a male patient.

The patient developed extensive collateral and accessory renal arteries as adaptive vascular remodelling in the setting of chronic, inactive large-vessel vasculitis.

• The vascular remodelling is described as 'extensive collateral and accessory renal arteries.'
• The vasculitis was characterized as chronic and inactive at the time of imaging.
• The remodelling is described as 'adaptive vascular remodelling' in response to the underlying stenotic disease.
• This constellation of extensive collateralisation in the context of TA is described as rare.

Renal function was preserved due to extensive collateralisation despite bilateral renal artery stenosis.

• The paper states renal function was preserved 'due to extensive collateralisation.'
• This finding suggests that robust collateral vessel development can compensate for bilateral main renal artery stenosis in chronic TA.
• The preservation of renal function in the setting of bilateral renal artery stenosis is highlighted as a notable aspect of this case.

CT angiography was instrumental in delineating the complex vascular remodelling in this case of chronic Takayasu arteritis.

• The paper underscores 'the role of CT angiography in delineating complex vascular remodelling in chronic TA.'
• CT angiography demonstrated both the bilateral renal artery stenosis and the extensive collateral and aberrant arteries.
• The imaging findings are described as an 'unusual' and complex vascular anatomy warranting CT angiographic demonstration.
• The authors emphasize 'the importance of early imaging in young individuals with unexplained hypertension.'