Table 1  Post-procedurally measured dislocation of the intramammary marker clip in mm (along the x-, y- and z-axis); dislocation was observed in five patients using sonography and in one patient using digital breast tomosynthesis (DBT). The intratumorous location of the marker clip was confirmed by specimen x-ray (SX) and histopathological examination (Histo.) after neoadjuvant chemotherapy and breast conserving surgery (out of a total of 25 examined patients).

Patients	Sonography			DBT			SX.	Histo.
	x	y	z	x	y	z
1.	2	2	3	0	0	0	✓	✓
2.	5	4	3	0	0	0	✓	✓
3.	4	6	5	0	0	0	✓	✓
4.	5	5	6	0	0	0	✓	✓
5.	5	5	6	0	0	0	✓	✓
6.	0	0	0	1	2	2	✓	✓