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Radiolabelled meta-iodobenzylguanidine (MIBG) is widely used in the diagnosis, follow-up and treatment of patients with tumours of neural crest origin. Some commonly prescribed and readily available over-the-counter medicines interfere with the uptake and biodistribution of this radiopharmaceutical. This may lead to poor concentration of radiolabelled MIBG within the target organs and tissues. The clinical implications are a potentially inaccurate assessment of tumour burden during diagnostic studies and a suboptimal radiation dose when MIBG is employed for targetted radiotherapy. In order to avoid false negative results a comprehensive list of prescribed and over-the-counter medicines that have the potential to inhibit uptake of MIBG has been compiled. It is hoped that this will help nuclear medicine physicians to avoid this pitfall.
SOLANKP et al. (Wed,) studied this question.