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Table 1 Pinder classification

From: MRI-based response patterns during neoadjuvant chemotherapy can predict pathological (complete) response in patients with breast cancer

Pinder classification Explanation
1i Pathological complete response, no DCIS
1ii Pathological complete response, including DCIS
2i Response > 90% (or < 10% invasive tumor left)
2ii Response of 50–90% (or 10–50% invasive tumor left)
2iii Response < 50% (or > 0% invasive tumor left)
3 No signs of response
  1. DCIS ductal carcinoma in situ