Clinical Nuclear Medicine · 1990 · 28 citations · 0 references
MedicineNuclear MedicineRadiologyDiagnostic ImagingDiagnostic RadiologyRenal PathologyPediatric Renal Nuclear MedicinePediatric Renal PathologyRenal DiseaseRenal ImagingRenal Nuclear ImagingRenal ScintigraphyAdrenal Incidentaloma PathologyIncidental Renal Mass DetectionInflammatory Renal Disease ImagingIodine-123 Metaiodobenzylguanidine ScintigraphyMetaiodobenzylguanidine ImagingPyelonephritis ImagingRenal Masses ImagingTc-99m Bone Scintigraphy
A 6-year-old boy presented with an inflammatory syndrome. Because Tc-99m MDP bone scintigraphy revealed increased tracer uptake at the upper pole of the right kidney, further studies were oriented towards a diagnosis of renal or adrenal pathology. I-123 metaiodobenzylguanidine (MIBG) accumulated at the site of the abnormal MDP uptake. The diagnosis of neuroblastoma or allied disorder was excluded on the basis of other investigations and further evaluation, suggesting that the MIBG uptake was a false-positive. Findings on clinical imaging, laboratory findings, Tc-99m DMSA imaging, sonography, and CT scanning were highly suggestive of acute focal pyelonephritis.