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• Ultrasonography has become an accepted diagnostic procedure, particularly in cardiology and obstetrics. It is also quite valuable in the evaluation of abdominal and retroperitoneal masses, with the unique ability to distinguish between cysts and solid tumors. The noninvasive and nonradiation-emitting features of ultrasound make it especially attractive for pediatric patients. ( Am J Dis Child 129:1096-1101)
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Jack L. Stuber (1975) studied this question.
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