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. 2003 Sep 30;89(7):1305–1309. doi: 10.1038/sj.bjc.6601245

Table 1b. Stage and grade distribution of the 25 pairs of tumours.

  G3 pT2 G2 pT2 G3 pT4 G2 pTa G3 pT1 G1 pTa G1 pT1 G2 pT1
Preinvasive       10 12 1 1 1
Postinvasive 22 1 2          

The table illustrates that most (23/2523/26) of the postinvasive tumours were G3 pT2, and there were 11 pTa and 14 pT1 tumours in the preinvasive group.