RT Journal Article SR Electronic T1 Safety of Repeated Radioembolizations in Patients with Advanced Primary and Secondary Liver Tumors and Progressive Disease After First Selective Internal Radiotherapy JF Journal of Nuclear Medicine JO J Nucl Med FD Society of Nuclear Medicine SP 360 OP 366 DO 10.2967/jnumed.113.127662 VO 55 IS 3 A1 Alina Zarva A1 Konrad Mohnike A1 Robert Damm A1 Juri Ruf A1 Ricarda Seidensticker A1 Gerhard Ulrich A1 Max Seidensticker A1 Maciej Pech A1 Jens Ricke A1 Holger Amthauer YR 2014 UL http://jnm.snmjournals.org/content/55/3/360.abstract AB The purpose of this study was to assess the safety of repeated 90Y radioembolization with resin microspheres in patients with extensive primary and secondary liver tumors after failure of first radioembolization. Methods: Between 2007 and 2011, 21 patients (12 women, 9 men; mean age, 61.0 y) with nonresectable advanced liver tumors (breast cancer liver metastases, n = 7; colorectal liver metastases, n = 5; hepatocellular carcinoma, n = 8; cholangiocellular carcinoma, n = 1) were repeatedly treated by radioembolization. Safety was the primary endpoint. Whole-liver treatment was achieved with sequential treatment sessions in most patients, with selective embolization of the left and right liver lobes within 6 wk. Toxicity was documented prospectively and according to Common Terminology Criteria for Adverse Events 4.0 criteria based on laboratory parameters; magnetic-resonance tomography; and clinical examinations 3 d, 6 wk, and every 3 mo after selective internal radiotherapy (SIRT). Metric variables were evaluated using the Student t test. Overall survival was assessed by Kaplan–Meier statistics. Results: Patients received an average of 1.6 whole-liver treatments performed in 3.0 unilobar radioembolizations (liver lobes sequentially). The mean total activity administered was 2.57 GBq. No radioembolization-induced liver disease was observed in any of the patients. Three patients showed reversible grade III to IV toxicities according to laboratory values, which returned to pretreatment levels after 6 wk. In 1 patient, a treatment-related duodenal ulcer occurred. Median overall survival was 18 mo after first radioembolization. Conclusion: In advanced liver tumors, repeated whole-liver treatments with 90Y radioembolization can be performed with an acceptable toxicity profile.