title: I-131 metaiodobenzylguanidine: diagnostic use in neuroblastoma patients in relapse.
abstract: Metaiodobenzylguanidine (MIBG) has been used for the detection and treatment of neuroectodermal tumors, including neuroblastoma. We report our experience with 131I-MIBG used diagnostically in neuroblastoma patients with relapse. Thirty-eight studies were performed in 26 patients. There were 24 children (range 3 months-14 years) and two adults. While the study was found to be both sensitive and specific for the presence of disease, there are instances of discordance. False-negative studies were found with a markedly anaplastic tumor and with two mature ganglioneuromas. A bone lesion was negative with 131I-MIBG, but positive on bone scan. A biopsy confirmed the presence of neuroblastoma. Caution should be exercised when scanning pretreated patients, and perhaps with newly diagnosed patients as well.
authors.affiliation: Division of Nuclear Medicine, Children's Hospital, Philadelphia, PA 19104.
authors.forename: S
authors.initials: S
authors.lastname: Heyman
authors.forename: A E
authors.initials: AE
authors.lastname: Evans
authors.forename: G J
authors.initials: GJ
authors.lastname: D'Angio
mesh_terms: D019797:3-Iodobenzylguanidine; D000293:Adolescent; D000328:Adult; D001859:Bone Neoplasms / Q000175:diagnosis / Q000556:secondary; D002648:Child; D002675:Child, Preschool; D005188:False Negative Reactions; D005260:Female; D006801:Humans; D007223:Infant; D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D008297:Male; D009447:Neuroblastoma / Q000175:diagnosis*
chemical_list: D007457:Iodine Radioisotopes; D007462:Iodobenzenes; D019797:3-Iodobenzylguanidine