Abstract
Surgically confirmed pheochromocytoma was the cause of arterial hypertension in 6 out of 668 (0.8%) children with significant hypertension admitted to Child Health Centre in Warsaw. Among clinical features most characteristic was sustained hypertension observed in all patients, often complicated by the accelerated phase of malignant hypertension and encephalopathy. Sustained tachycardia was also found in all patients. Elevated sedimentation rate and electrocardiographic changes were observed in each child while other abnormal laboratory findings such as hyperglycemia, etc. occurred at similar rate as in adults. Increased urinary excretion of catecholamines and their metabolites confirmed the diagnosis. In our study the most sensitive methods for tumor localization were ultrasonography and computed tomography of the adrenals while scintigraphy with iodo-131-metabenzylguanidine gave a high percentage of false negative results. Clinical presentation of pheochromocytomas in children is different than in adults and all pediatric patients with severe hypertension should be screened for this disease.
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