Long-Term Survival, Toxicity Profile, and role of F-18 FDG PET/CT scan in Patients with Progressive Neuroendocrine Tumors Following Peptide Receptor Radionuclide Therapy with High Activity In-111 Pentetreotide

High activity In-111 therapy is a safe and effective therapy for patients with progressive disseminated neuroendocrine tumors. No major hematological, renal and hepatic toxicities were observed. There was an increase in survival time particularly in patients with lower degree of liver involvement as well as patients who received three or more cycles of therapy, as compared to historical data. Pre-treatment FDG status may be a predictor of survival following In-111 pentetreotide therapy.