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Renal hypertension.

Continuing interest in the mechanism of hypertension have produced considerable new information on the underlying pathophysiologic processes involved. Elucidation of the role of renal malperfusion, the renin-angiotensin-aldosterone mechanism, and renal medullary antihypertensive substances continues to clarify our understanding of renal hypertension. Current evidence suggests that angiotensin can produce hypertension by a direct effect on peripheral blood vessels in malignant hypertension and in renin-secreting renal tumors and by an intrarenal mechanism influencing intrarenal distribution of …