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Severe hypertension in children with renovascular disease
H S Broekhuizen-de Gast1, M M Tiel-van Buul, E J Van Beek
1Department of Radiology, Reinier de Graaf Gusthuis, Delft, The Netherlands.
Insights
Renovascular disease causes hypertension in children, posing significant health risks. Dynamic radionuclide scintigraphy with Tc-99m MAG3 aids in diagnosing this condition in pediatric patients.
Area of Science:
- Pediatric Nephrology
- Cardiovascular Imaging
- Diagnostic Radiology
Background:
- Renovascular disease is a primary cause of secondary hypertension in children, linked to high morbidity and mortality.
- Secondary hypertension is prevalent in pediatric populations, with fibromuscular hyperplasia being the most common etiology (70%).
- Associated conditions include aorto-aortitis, midaortic syndrome, and Williams-Bueren syndrome.
Observation:
- Early detection of renal artery stenosis is crucial in managing pediatric hypertension.
- While renal arteriography is definitive, noninvasive imaging like ultrasonography and radionuclide scintigraphy are valuable adjuncts.
- Three pediatric cases of renovascular hypertension were studied.
Findings:
- Dynamic radionuclide scintigraphy using Tc-99m MAG3 demonstrated significant diagnostic utility.
- This imaging technique played an essential role in identifying renovascular hypertension in the studied children.
- Tc-99m MAG3 scintigraphy offers a valuable tool for diagnosing renal artery stenosis in pediatric patients.
Implications:
- Accurate and timely diagnosis of renovascular hypertension in children can lead to better management strategies.
- The findings support the use of Tc-99m MAG3 scintigraphy as a key diagnostic method in pediatric renovascular hypertension.
- Improved diagnostic approaches can mitigate the long-term risks associated with pediatric hypertension and renal artery stenosis.
Abstract:
Renovascular disease is an important cause of hypertension in children and is associated with considerable morbidity and mortality risks. Secondary hypertension is more common in children than in adults, with children accounting for 75% to 80% of cases. In 70% of secondary hypertension in children, the cause is fibromuscular hyperplasia. Other associated conditions are aorto-aortitis, the midaortic syndrome, and Williams-Bueren syndrome. Imaging techniques have an important role in the early discovery of renal artery stenosis. Although renal arteriography remains the definitive method, noninvasive and less invasive radiographic procedures such as ultrasonography with duplex Doppler scanning and radionuclide scintigraphy have been used as adjunct diagnostic tools in children. The authors describe three young children with renovascular hypertension in whom dynamic radionuclide scintigraphy with Tc-99m MAG3 played an essential role in the diagnosis of renovascular hypertension.