A 17-year-old adolescent boy with biochemically raised 2-hour urinary metanephrine and normetanephrine as well as CT findings of retroperitoneal soft tissue mass and bony metastases was referred for further assessment. Apart from 68Ga DOTATATE PET/CT evaluation, pretargeted systemic radionuclide therapy assessment with 131I-MIBG scintigraphy showed unusual phenomenon of MIBG superscan. Postsurgically, restaging 99mTc-MDP bone scintigraphy showed typical bone superscan features. The MIBG superscan was better delineated on post–131I-MIBG therapy images.
From the *Department of Nuclear Medicine, National Cancer Institute, Putrajaya; and †Department of Nuclear Medicine, Kuala Lumpur Hospital, Kuala Lumpur, Malaysia.
Received for publication July 29, 2014; revision accepted May 22, 2015.
Conflicts of interest and sources of funding: none declared.
Correspondence to: Teik Hin Tan, MD, Department of Nuclear Medicine, National Cancer Institute, No 4, Jalan P7, Presint 7, 62550, Putrajaya, Malaysia. E-mail: email@example.com.