Table 1

Comparison of tumour sizes categorised on the basis of the TNM system10

Group AGroup BAll
pTis, in situ carcinoma (ductal carcinoma in situ); pT1mic, ductal carcinoma in situ with microinvasion, invasive carcinoma not larger than 1 mm; pT1a, invasive carcinoma not larger than 5 mm; pT1b, invasive carcinoma larger than 5 mm, but not larger than 10 mm; pT1c, invasive carcinoma larger than 10 mm, but not larger than 20 mm; pT2, invasive carcinoma larger than 20 mm, but not larger than 50 mm; pT3, invasive carcinoma larger than 50 mm.
pTis2911
p1mic202
pT1a224
pT1b51419
pT1c465197
pT26446110
pT3213
All123123246