title: Synchronous tumors: a proposal for standardization.
authors.forename: Antonella
authors.initials: A
authors.lastname: Coli
authors.forename: Carlo
authors.initials: C
authors.lastname: Dell'Isola
authors.forename: Giulio
authors.initials: G
authors.lastname: Bigotti
mesh_terms: D006801:Humans; D009378:Neoplasms, Multiple Primary / Q000145:classification*; D016609:Neoplasms, Second Primary / Q000145:classification*