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The British Journal of Radiology, Vol 70, Issue 829 90-92, Copyright © 1997 by British Institute of Radiology

ARTICLES

Positive MIBG scanning at the time of relapse in neuroblastoma which was MIBG negative at diagnosis

KB Schwarz, I Driver, IJ Lewis and RE Taylor
Department of Paediatric Oncology, St James's University Hospital, Leeds, UK.

Metaiodobenzylguanidine (MIBG) labelled with iodine-123 (123I) or 131I has become a well established tool with high sensitivity and specificity in the diagnosis and staging of neuroblastoma in children. However, some neuroblastomas do not take up MIBG at the time of diagnosis. The reasons for this are unclear but may be related to uptake mechanisms. Follow-up MIBG scans have not been reported in these patients. We present a case where an initial 123I-MIBG-scan was negative at diagnosis but became positive when the patient relapsed. This unusual occurrence may have implications for patients with a negative MIBG-scan at presentation. These patients should be re-evaluated by MIBG-scan at the time of relapse as a positive scan then offers the possibility of additional treatment with MIBG therapy.




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