Positive I-123-MIBG-scintigraphy in osteosarcoma.

I-123-MIBG scintigraphy has become a standard imaging technique in the detection of neuroendocrine or neurocrest derived tumors, especially neuroblastoma and pheochromocytoma. We report on a positive I-123-MIBG uptake in a pediatric osteosarcoma patient and demonstrate, that unusual results still occur with this established imaging method.