Abstract
The Society of Nuclear Medicine and Molecular Imaging (SNMMI) is an international scientific and professional organization founded in 1954 to promote the science, technology, and practical application of nuclear medicine. Its 18,000 members are physicians, technologists, and scientists specializing
Highlights
With the increasing use of sonography, dilatation of the pelvicalyceal system or ureter is the most common abnormality of the urinary tract detected in utero or after birth
Acute ureteropelvic junction (UPJ) obstruction: This condition usually occurs in older children, manifested by sudden onset of severe flank/abdominal pain associated with nausea/vomiting (Dietl’s crisis)
Nephrolithiasis is uncommon in children, but it may cause acute urinary tract obstruction (UPJ or ureterovesical junction (UVJ))
Summary
With the increasing use of sonography, dilatation of the pelvicalyceal system (hydronephrosis, HN) or ureter (hydroureteronephrosis, HUN) is the most common abnormality of the urinary tract detected in utero or after birth. HN/HUN improves or resolves completely, but in others, it remains stable or gradually gets worse and, depending on the underlying cause and without timely surgical intervention, may result in silent loss of renal function or recurrent episodes of abdominal/flank pain. 3. Older children with recurrent abdominal pain and HN to diagnose intermittent UPJ obstruction as the cause of the symptoms. Older children with recurrent abdominal pain and HN to diagnose intermittent UPJ obstruction as the cause of the symptoms Diuresis renography in these patients would be most informative if it is done during or within 24 h after an episode of pain [3]. Evaluation of renal function and postdiuresis drainage after surgical interventions
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