Primary renal carcinoid tumor: A rare cystic renal neoplasm

Figure 5 Normal physiologic uptake of I^-123 meta-iodobenzylguanidine observed in the salivary glands, nasal mucosa, myocardium, liver, bowel, and both thyroid lobes. Low-level uptake was also observed in the lungs on 24-h image. Meta-iodobenzylguanidine (MIBG) was excreted into the urine, and physiologic activity was observed in the bladder. No definite abnormal accumulation of MIBG was apparent in the whole body through the 48-h image.