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Mammographic prognostic indicators in small tumours

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

A study of 343 women with preoperative mammography showing small invasive tumours were classified according to the following radiographic features:

  • spiculated tumour with no calcification
  • oval tumour with no calcifications
  • any tumour with non-casting-type calcifications
  • any tumour with casting-type calcifications

Follow up showed that mortality in patients with small invasive breast tumours which showed casting-type calcifications was much higher than for other groups:

  • the 14% of women with tumours 1-9 mm diameter and casting-type calcification accounted for 74% of cancer deaths
  • the long-term survival of patients with tumours 1-9 mm diameter and no casting-type calcification was 95%

The conclusion is that small tumours with casting-type calcification should be considered as larger tumours when planning treatment of the cancer.

Reference:

  • 1) Tabar, L. et al. (2000). A novel method for prediction of long-term outcome of women with T1a, T1b and 10-14 mm invasive breast cancer: a prospective study. Lancet, 355, 429-33.

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