Segmental Intimal Hyperplasia of the Abdominal Aorta and Renal Arteries Producing Hypertension in an Infant

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Abstract
A 7-week-old infant had unusual intimal hyperplasia of the abdominal aorta and renal arteries. The intimal alterations were not compatible with any of the inflammatory, degenerative, or thrombotic processes usually observed in these vessels. Lesser degrees of this disease, limited to segments of renal arteries, could produce hypertension and yet be overlooked in routine autopsy examinations. The need for prompt detection of hypertension in the neonatal period is stressed by the findings in this case. With greatly improved technics in vascular surgery, successful treatment of renal vascular occlusions is possible. This would require operation during a period of minimal risk, i. e., recognition of the disease before hypertension had progressed to cardiac decompensation.

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