title: [Interval cancers as indicators of performance in screening programmes].
abstract: GISMa analyses the interval cancer (IS) topic providing guidelines and reference standards in addition to CE recommendations. IC identification is based on Cancer Registries (CR), if existing, or on hospital discharge records, in alternative. The optimal measure of IC frequency (inversely correlated with sensitivity) is the IC proportional incidence (observed IC/carcinomas expected in absence of screening). Other formulas (IC/IC + screen detected cancers; IC rate per 1000 negative screens) look less reliable. IC stage at diagnosis (if available through CR) must be compared with screen detected cancer and cancer detected in non-attenders. Review of mammograms preceding the IC (coded as screening error, minimal signs, or occult) should be done mainly with a blind procedure (IC mixed with negative controls), as this procedure is more representative of the original scenario and more respectful of radiologist's rights.
authors: stefano.ciatto@gmail.com
authors: Stefano
authors: S
authors: Ciatto
authors: Carlo
authors: C
authors: Naldoni
authors: Antonio
authors: A
authors: Ponti
authors: Livia
authors: L
authors: Giordano
authors: Daniela
authors: D
authors: Giorgi
authors: Alfonso
authors: A
authors: Frigerio
authors: Marcello
authors: M
authors: Vettorazzi
authors: Lauro
authors: L
authors: Bucchi
authors: Luigi
authors: L
authors: Bisanti
authors: Marco
authors: M
authors: Petrella
authors: Eugenio
authors: E
authors: Paci
authors: Gianni
authors: G
authors: Saguatti
authors: Dolores
authors: D
authors: Santini
authors: Marco Rosselli
authors: MR
authors: Del Turco
authors: Marco
authors: M
authors: Zappa
authors: Paolo
authors: P
authors: Giorgi Rossi
authors: Vittorio
authors: V
authors: Corsetti
authors: Luisella
authors: L
authors: Milanesio
authors: Priscilla Sassoli
authors: PS
authors: de' Bianchi
mesh_terms: D006801:Humans; D008327:Mammography; D008403:Mass Screening; D009369:Neoplasms / Q000000981:diagnostic imaging*