Fig. 5
Male patient, 64 years old, with well-differentiated prostate cancer in February after combined treatment, Back pain 2 weeks preoperative VAS score of 8.7. A–E Preoperative CT, MRI, and PET-CT show sacral bone destruction and soft tissue mass formation, sacral lesions involving the sacrum, and the corresponding hole. F–G S2PVP combined with 125I seed implantation. H–I Postoperative CT showed bone cement and 125I particle distribution in the lesion area, with no leakage of bone cement; Postoperative VAS score, 2.5 points, significant pain relief