Abstract
A case of false positive I-131 MIBG imaging for detection of pheochromocytoma is presented. There was an area of increased tracer uptake in the left renal region that showed steadily reducing activity over a period of three days. This raised the suspicion of a dilated renal pelvis, which was later confirmed by Tc-99m DTPA imaging. It is advisable in cases of ambiguous I-131 MIBG imaging to use Tc-99m DTPA rather than Tc-99m DMSA for localizing the kidneys and renal pelvis.
MeSH terms
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3-Iodobenzylguanidine
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Adult
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Diagnosis, Differential
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False Positive Reactions
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Humans
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Iodine Radioisotopes*
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Iodobenzenes*
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Kidney Diseases / diagnostic imaging*
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Kidney Pelvis / diagnostic imaging*
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Male
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Organometallic Compounds
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Pentetic Acid
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Pheochromocytoma / diagnostic imaging*
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Radionuclide Imaging
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Succimer
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Technetium Tc 99m Dimercaptosuccinic Acid
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Technetium Tc 99m Pentetate
Substances
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Iodine Radioisotopes
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Iodobenzenes
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Organometallic Compounds
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3-Iodobenzylguanidine
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Technetium Tc 99m Dimercaptosuccinic Acid
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Pentetic Acid
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Succimer
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Technetium Tc 99m Pentetate