In Situ and Small Invasive Breast Cancer Register in Victoria, 1988 to 1992: Tumour characteristics and patient management

Abstract

Background: All cases of in situ and invasive breast cancer are reported to the Victorian Cancer Registry. In 1988 a special subregister of all cases of carcinoma in situ and small invasive cancers up to 10 mm in size was established - the In situ and Small Invasive Breast Cancer Register (ISSIBCR). This was unique in being a population-based register and only possible because in Victoria, as in some other Australian states, all cancers including in situ disease are reported to the Central Cancer Registry. Methods: Between 1 January 1988 and 31 December 1992, 517 cases of in situ cancers and 892 invasive cancers of ≤ 10 mm in diameter were registered. During the study period, mammography scr..