RT Journal Article T1 Rare thyroid malignancies in Europe: Data from the information network on rare cancers in Europe (RARECAREnet). A1 Locati, Laura A1 Cavalieri, Stefano A1 Dal Maso, Luigino A1 Busco, Susanna A1 Anderson, Lesley Ann A1 Botta, Laura A1 Bento, Maria Jose A1 Carulla, Maria A1 Chirlaque Lopez, Maria Dolores A1 Fusco, Mario A1 Guevara, Marcela A1 Innos, Kaire A1 Børge Johannesen, Tom A1 Micallef, Rita A1 Minicozzi, Pamela A1 Panato, Chiara A1 Petrova, Dafina A1 Rubio-Casadevall, Jordi A1 Smailyte, Giedre A1 Francesca Vitale, Maria A1 Trama, Annalisa K1 Anaplastic thyroid cancer K1 Cancer registries K1 Epidemiology K1 Incidence K1 Medullary thyroid cancer K1 Thyroid cancer AB Limited information is available on the incidence of rare thyroid cancer (TC) subtypes: anaplastic (ATC) and medullary (MTC). The aim of this study was to describe incidence variations and trends across European countries of all TC subtypes. We used the RARECAREnet database including 80721 TC incident cases in the period 2000-2007 from 77 population-based cancer registries (CRs) in Europe. In the trend analyses, we included 68890 TC cases from 53 CRs with at least 6 years of incidence data in the years 2000-2007. In Europe age-standardised incidence rates (ASR) in women were The huge increase and heterogeneity between countries of PTC incidence has a small influence on the trends and variations of MTC and ATC in Europe. Large-scale epidemiological and clinical registry-based studies are warranted to increase knowledge about the rarest TC subtypes. This information would be fundamental for the design of new clinical trials and for inference. PB Elsevier Ltd YR 2020 FD 2020-04-29 LK http://hdl.handle.net/10668/15636 UL http://hdl.handle.net/10668/15636 LA en NO Locati L, Cavalieri S, Dal Maso L, Busco S, Anderson LA, Botta L, et al. Rare thyroid malignancies in Europe: Data from the information network on rare cancers in Europe (RARECAREnet). Oral Oncol. 2020 Sep;108:104766. DS RISalud RD Apr 8, 2025