Activity of iodine-123 metaiodobenzylguanidine in childhood neuroblastoma: lack of relation to tumour differentiation in vivo

Eur J Nucl Med. 1998 Feb;25(2):144-9. doi: 10.1007/s002590050207.


Neuroblastoma (NB) tumour cells have a remarkable tendency to differentiate spontaneously or under the influence of certain drugs. It is not clear whether metaiodobenzylguanidine (MIBG) uptake correlates with differentiation of NB cells. In 28 tumours of 26 patients, iodine-123 MIBG uptake in primary NBs was studied in relation to tumour differentiation, tumour size, cell density and degree of necrosis in subsequently resected specimens. Genetic features such as the presence of chromosomal aberrations (1p-deletion and MYCN amplification) and/or P-glycoprotein (mdr-1 gene product) were also evaluated in relation to MIBG uptake. A highly variable and unpredictable intensity of MIBG uptake was observed in primary as well as secondary resected tumours. This intensity did not relate to any of the above-mentioned factors except that there was a trend towards more intense uptake with increasing size of the tumour. We conclude from our observations that, in contrast to commonly held opinion, well-differentiated tumours do not a priori show a lower MIBG uptake in vivo, even when there are a low number of viable cells and a high degree of necrosis. The degree of differentiation or tumour viability and necrosis following longstanding chemotherapeutic treatment cannot be predicted by the MIBG scan findings. The observed MIBG uptake may be importantly influenced by factors other than those associated with cellular differentiation.

Publication types

  • Clinical Trial

MeSH terms

  • 3-Iodobenzylguanidine*
  • ATP Binding Cassette Transporter, Subfamily B, Member 1 / analysis
  • Abdominal Neoplasms / chemistry
  • Abdominal Neoplasms / diagnostic imaging
  • Abdominal Neoplasms / genetics
  • Abdominal Neoplasms / pathology
  • Adolescent
  • Adrenal Gland Neoplasms / chemistry
  • Adrenal Gland Neoplasms / diagnostic imaging
  • Adrenal Gland Neoplasms / genetics
  • Adrenal Gland Neoplasms / pathology
  • Cell Count
  • Child
  • Child, Preschool
  • Chromosome Aberrations
  • Female
  • Humans
  • Infant
  • Infant, Newborn
  • Iodine Radioisotopes
  • Male
  • Necrosis
  • Neoplasm Staging
  • Neuroblastoma / chemistry
  • Neuroblastoma / diagnostic imaging
  • Neuroblastoma / genetics
  • Neuroblastoma / pathology*
  • Predictive Value of Tests
  • Radionuclide Imaging
  • Radiopharmaceuticals*
  • Thoracic Neoplasms / chemistry
  • Thoracic Neoplasms / diagnostic imaging
  • Thoracic Neoplasms / genetics
  • Thoracic Neoplasms / pathology
  • Uterine Cervical Neoplasms / chemistry
  • Uterine Cervical Neoplasms / diagnostic imaging
  • Uterine Cervical Neoplasms / genetics
  • Uterine Cervical Neoplasms / pathology


  • ATP Binding Cassette Transporter, Subfamily B, Member 1
  • Iodine Radioisotopes
  • Radiopharmaceuticals
  • 3-Iodobenzylguanidine