title: A false positive I-131 MIBG due to dilated renal pelvis: a case report.
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.
authors.affiliation: Nuclear Medicine Department, Mubarak Al-Kabeer Hospital, Kuwait.
authors.forename: R H
authors.initials: RH
authors.lastname: Bahar
authors.forename: S
authors.initials: S
authors.lastname: Mahmoud
authors.forename: A
authors.initials: A
authors.lastname: Ibrahim
authors.forename: A H
authors.initials: AH
authors.lastname: al-Gazzar
mesh_terms: D019797:3-Iodobenzylguanidine; D000328:Adult; D003937:Diagnosis, Differential; D005189:False Positive Reactions; D006801:Humans; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D007674:Kidney Diseases / Q000000981:diagnostic imaging*; D007682:Kidney Pelvis / Q000000981:diagnostic imaging*; D008297:Male; D009942:Organometallic Compounds; D004369:Pentetic Acid; D010673:Pheochromocytoma / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D004113:Succimer; D019783:Technetium Tc 99m Dimercaptosuccinic Acid; D016284:Technetium Tc 99m Pentetate
chemical_list: D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D009942:Organometallic Compounds; D019797:3-Iodobenzylguanidine; D019783:Technetium Tc 99m Dimercaptosuccinic Acid; D004369:Pentetic Acid; D004113:Succimer; D016284:Technetium Tc 99m Pentetate