Figure 8 shows the main considerations made in the conception of the dataset. This dataset was built using 6 breast PCLs (obtained from MRI data), taking into account a uniform distribution of breast volume (2 small, 2 medium and 2 big breasts) and breast laterality (3 left and 3 right breasts), as described in Table 3. Dataset instances were created by sequentially defining 4 different breast densities for each breast selected before, according to BI-RADS® reporting system (4×6=24 cases), then different quadrants for the tumor location (4×24=96 cases) and, finally, 3 different tumor sizes for each location (3×96=288 cases). In the end, the dataset sums up to a total of 288 cases representing all the possible combinations of the most prominent clinical factors reported to affect breast shape after BCS.