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Sökning: WFRF:(Forrer Flavio)

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1.
  • Forrer, Flavio, et al. (författare)
  • Treatment with 177Lu-DOTATOC of patients with relapse of neuroendocrine tumors after treatment with 90Y-DOTATOC.
  • 2005
  • Ingår i: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. - 0161-5505. ; 46:8, s. 1310-6
  • Tidskriftsartikel (refereegranskat)abstract
    • Therapy with [(90)Y-DOTA(0), Tyr(3)]-octreotide (DOTATOC, where DOTA = tetraazacyclododecane tetraacetic acid and TOC = D-Phe-c(Cys-Tyr-D-Trp-Lys-Thr-Cys)-Thr(ol)) is established for the treatment of metastatic neuroendocrine tumors. Nevertheless, many patients experience disease relapse, and further treatment may cause renal failure. Trials with (177)Lu-labeled somatostatin analogs showed less nephrotoxicity. We initiated a prospective study with (177)Lu-DOTATOC in patients with relapsed neuroendocrine tumors after (90)Y-DOTATOC treatment. METHODS: Twenty-seven patients, pretreated with (90)Y-DOTATOC, were included. The mean time between the last treatment with (90)Y-DOTATOC and (177)Lu-DOTATOC was 15.4 +/- 7.8 mo (SD). All patients were injected with 7,400 MBq of (177)Lu-DOTATOC. Restaging was performed after 8-12 wk. Hematotoxicity or renal toxicity of World Health Organization grade 1 or 2 was not an exclusion criterion. RESULTS: Creatinine levels increased significantly, from 66 +/- 14 micromol/L to 100 +/- 44 micromol/L (P < 0.0001), after (90)Y-DOTATOC therapy. The mean hemoglobin level dropped from 131 +/- 14 to 117 +/- 13 g/L (P < 0.0001) after (90)Y-DOTATOC therapy. (177)Lu-DOTATOC therapy was well tolerated. No serious adverse events occurred. The mean absorbed doses were 413 +/- 159 mGy for the whole body, 3.1 +/- 1.5 Gy for the kidneys, and 61 +/- 5 mGy for the red marrow. After restaging, we found a partial remission in 2 patients, a minor response in 5 patients, stable disease in 12 patients, and progressive disease in 8 patients. Mean hemoglobin and creatinine levels did not change significantly. CONCLUSION: (177)Lu-DOTATOC therapy in patients with relapse after (90)Y-DOTATOC treatment is feasible, safe, and efficacious. No serious adverse events occurred.
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2.
  • Giammarile, Francesco, et al. (författare)
  • EANM procedure guideline for the treatment of liver cancer and liver metastases with intra-arterial radioactive compounds
  • 2011
  • Ingår i: European Journal of Nuclear Medicine and Molecular Imaging. - : Springer. - 1619-7070. ; 38:7, s. 1393-1406
  • Tidskriftsartikel (refereegranskat)abstract
    • surgery (i.e. resection or liver transplantation), but only 10-20% of patients are candidates for this. In other patients, a variety of palliative treatments can be given, such as chemoembolization, radiofrequency ablation or recentlyPrimary liver cancers (i.e. hepatocellular carcinoma or cholangiocarcinoma) are worldwide some of the most frequent cancers, with rapidly fatal liver failure in a large majority of patients. Curative therapy consists of introduced tyrosine kinase inhibitors, e. g. sorafenib. Colorectal cancer is the second most lethal cancer in Europe and liver metastases are prevalent either at diagnosis or in follow-up. These patients are usually treated by a sequence of surgery, chemotherapy and antibody therapy [Okuda et al. (Cancer 56: 918-928, 1985); Schafer and Sorrell (Lancet 353: 1253-1257, 1999); Leong et al. (Arnold, London, 1999)]. Radioembolization is an innovative therapeutic approach defined as the injection of micron-sized embolic particles loaded with a radioisotope by use of percutaneous intra-arterial techniques. Advantages of the use of these intra-arterial radioactive compounds are the ability to deliver high doses of radiation to small target volumes, the relatively low toxicity profile, the possibility to treat the whole liver including microscopic disease and the feasibility of combination with other therapy modalities. Disadvantages are mainly due to radioprotection constraints mainly for I-131-labelled agents, logistics and the possibility of inadvertent delivery or shunting [Novell et al. (Br J Surg 78: 901-906, 1991)]. The Therapy, Oncology and Dosimetry Committees have worked together in order to revise the European Association of Nuclear Medicine (EANM) guidelines on the use of the radiopharmaceutical I-131-Lipiodol (Lipiocis (R), IBA, Brussels, Belgium) and include the newer medical devices with Y-90-microspheres. Y-90 is either bound to resin (SIR-Spheres (R), Sirtex Medical, Lane Cove, Australia) or embedded in a glass matrix (TheraSphere (R), MDS Nordion, Kanata, ON, Canada). Since Y-90-microspheres are not metabolized, they are not registered as unsealed sources. However, the microspheres are delivered in aqueous solution: radioactive contamination is a concern and microspheres should be handled, like other radiopharmaceuticals, as open sources. The purpose of this guideline is to assist the nuclear medicine physician in treating and managing patients undergoing such treatment. I-131-Lipiodol is a consolidated treatment option and the previous European Association of Nuclear Medicine (EANM) guidelines have been revised for its use. The newer Y-90-microsphere therapy is rapidly expanding throughout the nuclear medicine community. To date, published data on microspheres, particularly on dosimetry features and the characterization of the objective response, are still preliminary. Therefore, the aim of this part of the document is to set up a first basic procedure to guide nuclear medicine physicians in treatment with radiolabelled microspheres.
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