Fig. 4

Case 1: postoperative evaluation. X-ray (4-A), CT (4-B), and comparison of 3-D-planned (green) and actually resected (purple) tumor specimens (4-C-F). a Postoperative antero-posterior X-ray of the pelvis. b Axial computed tomography (CT). c Postoperative 3-D evaluation of tumor resection specimen (mm). d Comparison of planned and actual tumor resection specimens. e Orientation (mm) of actual tumor resection specimen to the pelvis without planned resected tumor specimen (white). f Tumor (red) orientation within the resected tumor specimen. e Orientation (mm) of actual tumor resection specimen to the pelvis without planned resected tumor specimen (white). f Tumor (red) orientation within the resected tumor specimen