Lampe II, William T.
November 1965
Angiology;Nov1965, Vol. 16 Issue 11, p677
Academic Journal
The renal lesions capable of producing hypertension have been reviewed. Three cases were studied which illustrate three uncommon causes of hypertension. The first case illustrates how intrinsic neoplastic renal disease mayproduce hypertension. In the second case, a congenital band of a fibromuscular nature from the psoas minor muscle caused constriction of the renal artery and resulted in hypertension. In the third case, a neoplasm surrounded and obliterated the renal circulation to one kidney. All three cases illustrate how extrinsic pressure may result from various causes and result in hypertension. The causal relationship between renal neoplasms and hypertension has now become definitely established. This is one of the less common causes of hypertension, but it is now clearly delineated by four possible mechanisms. (1) A neoplasm may produce extrinsic pressure on the renal artery. (2) Arteriovenous shunting of blood within a renal tumor can lower renal vascular resistance. (3) A neoplasm can surround and obliterate the renal circulation to one kidney. (4) An intrarenal neoplasm may cause pressure on adjacent normal renal parenchyma producing localized ischemia. Obstruction to venous drainage by tumor, (extrinsic or intrinsic) has also been postulated, although the mechanism is unclear.


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