The MIBG super scan. Description and therapeutic implications.

The author reports a case of metastatic pheochromocytoma to bone imaged with 1-131 MIBG. The "MIBG super scan" pattern is described and is characterized by marked increased uptake in bone with essentially complete absence of activity in the liver and bladder. The avid bony metastases "steal" activity from the liver, as well as from the kidneys and soft tissues. This is felt to be comparable to the "super scan" in bone scintigraphy, whereby bony metastases "steal" activity from the kidneys and soft tissues.