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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