Characteristic | Category | N | % |
---|---|---|---|
Tumour diagnosis | Clinical symptoms | 5 | 22 |
 | Mammography | 16 | 70 |
 | MRI | 2 | 8 |
Location of the tumour | Inner quadrant | 2 | 9 |
 | Outer quadrant | 17 | 74 |
 | Central | 4 | 17 |
Preoperative diagnosis of histological core needle biopsy | DCIS | 5 | 21 |
 | DCIS with invasive carcinoma | 14 | 61 |
 | Not conclusive | 2 | 9 |
 | Not performed | 2 | 9 |
Number of surgical procedures | 1 | 17 | 74 |
 | 2 | 5 | 22 |
 | 3 | 1 | 4 |
Final treatment | Breast-conserving surgery | 2 | 9 |
 | Mastectomy | 21 | 91 |
Axillairy staging | Sentinel lymph node biopsy | 10 | 44 |
 | Axillairy lymph node dissection | 10 | 44 |
 | Sentinel lymph node biopsy followed by axillairy |  |  |
 | lymph node dissection | 3 | 13 |
Grading of DCIS | Grade I, well differentiated | 0 | 0 |
 | Grade II, moderately differentiated | 8 | 35 |
 | Grade III, poorly differentiated | 15 | 65 |
Grading of invasive carcinoma | Grade I, well differentiated | 8 | 35 |
 | Grade II, moderately differentiated | 6 | 26 |
 | Grade III, poorly differentiated | 9 | 39 |
Size of invasive carcinoma | ≤ 1 mm | 4 | 17 |
 | 1–10 mm | 8 | 35 |
 | 11–20 mm | 4 | 17 |
 | 21–30 mm | 5 | 22 |
 | 31–40 mm | 1 | 4 |
 | 41–50 mm | 1 | 4 |
Percentage EIC | <50% | 5 | 22 |
 | 50%–75% | 6 | 26 |
 | >75% | 12 | 52 |