Table 4 Patterns of breast and distant recurrences following high-, intermediate- and low-grade DCIS.

From: Pathological features of 11,337 patients with primary ductal carcinoma in situ (DCIS) and subsequent events: results from the UK Sloane Project

Primary lesion Ipsilateral Contralateral Unknown side Distant Total Unknown status
n Percent n Percent n Percent n Percent   
High-grade DCIS 377 6.6 249 4.3 3 0.05 35 0.4 5753 147
Intermediate-grade DCIS 210 8.2 142 5.6 0 0 8 0.27 2550 63
Low-grade DCIS 73 8.4 39 5.6 1 0.1 3 0.23 868 21
Unknown grade DCIS 3 0% 1 0 0 0 0 0 20 1
Total 663 100% 431 100% 4 100% 46 100% 9191 232