[Interval cancers as indicators of performance in screening programmes].
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.
Ciatto
Stefano
S
stefano.ciatto@gmail.com
Naldoni
Carlo
C
Ponti
Antonio
A
Giordano
Livia
L
Giorgi
Daniela
D
Frigerio
Alfonso
A
Vettorazzi
Marcello
M
Bucchi
Lauro
L
Bisanti
Luigi
L
Petrella
Marco
M
Paci
Eugenio
E
Saguatti
Gianni
G
Santini
Dolores
D
Del Turco
Marco Rosselli
MR
Zappa
Marco
M
Giorgi Rossi
Paolo
P
Corsetti
Vittorio
V
Milanesio
Luisella
L
de' Bianchi
Priscilla Sassoli
PS
D006801:Humans; D008327:Mammography; D008403:Mass Screening; D009369:Neoplasms / Q000000981:diagnostic imaging*