Prognosis of screen-detected breast cancers: results of a population based studyReport as inadecuate




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BMC Cancer

, 6:17

First Online: 23 January 2006Received: 25 July 2005Accepted: 23 January 2006DOI: 10.1186-1471-2407-6-17

Cite this article as: Cortesi, L., Chiuri, V.E., Ruscelli, S. et al. BMC Cancer 2006 6: 17. doi:10.1186-1471-2407-6-17

Abstract

BackgroundThe reduced mortality rate from breast carcinoma among women offered screening mammography is demonstrated after 15–20 years of follow-up. However, the assessment of 5-year overall and event-free survival could represent an earlier measure of the efficacy of mammography screening program MSP.

MethodsAll cases of breast cancer diagnosed in the Province of Modena between years 1996 and 2000 in women aged 50 to 69 years, were identified through the Modena Cancer Registry MCR. Stage of disease and treatment information were obtained from clinical records. All the events occurring up to June 30, 2003 were retrieved by experienced monitors. Five-year overall and event-free survival were the principal end-points of the study.

ResultsDuring a 5-year period, 587 primary breast cancers were detected by the MSP and 471 primary breast cancers were diagnosed out of the MSP. The screen-detected breast cancers were smaller, more likely node negative, with low histological grade, low proliferative activity and positive receptors status. Furthermore, the breast cancer diagnosed through the MSP more frequently received a conservative surgery. The 5-year survival rate was 94% in the screen-detected group, versus 84% in the other group p = 0.0001. The rate of 5-year event-free survival was 89% and 75% for the MSP participants and not participants, respectively p = 0.0001.

ConclusionsOur data confirm a favourable outcome of screen-detected breast cancers in terms of five-year overall and event-free survival, which reflect the good quality assurance parameters of the MSP. Finally, a cancer registry should be implemented in every area covered by screening programs.

Electronic supplementary materialThe online version of this article doi:10.1186-1471-2407-6-17 contains supplementary material, which is available to authorized users.

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Author: Laura Cortesi - Vincenzo E Chiuri - Silvia Ruscelli - Valeria Bellelli - Rossella Negri - Ivan Rashid - Claudia Cirilli -

Source: https://link.springer.com/







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