Article Figures & Data
Figures
- FIG 1.
A 68-year-old woman with painful osteolytic L2 metastases from lung adenocarcinoma was treated with MWA combined with VA. A, Preoperative axial CT shows L2 osteolytic destruction. B, A thermocouple needle was inserted and placed in proximity to the posterior vertebral body to monitor real-time temperature during MWA via the paravertebral approach. C, The MVA antenna is inserted into the lesion via a transpedicular approach. D, Postprocedural axial CT images show cement distribution in the treated vertebra.
- FIG 2.
A, Changes in the median preoperative and postoperative VAS scores (P < .05 versus baseline). B, The mean (SD) of daily morphine consumption before and after the procedure. C, Changes in the median preoperative and postoperative ODI scores (P < .01 versus baseline).
- FIG 3.
A 54-year-old man with painful L2 metastases from choroidal melanoma was treated with MWA and VA and developed partial hemiplegia after the procedure. A, An aggressive destructive osteolytic lesion of the L2 vertebra with posterior vertebral wall involvement and epidural compression is seen on the axial MR image. B, Sagittal CT shows the distribution of cement in the metastatic vertebra. C, Six-month follow-up axial MR imaging shows the epidural tumor shrinkage, and local tumor control was achieved.
Tables
Characteristics No. Percentage Mean age (range) (yr) 62 (36–78) Sex Male 50 54.9% Female 41 45.1% Primary malignancy Lung 36 39.6% Breast 13 14.3% Liver 5 5.5% Bile duct 2 2.2% Esophagus 11 12.1% Cardia and stomach 4 4.4% Colorectum 5 5.5% Sarcoma 2 2.2% Multiple myeloma 1 1.1% Kidney 2 2.2% Ureter 3 3.3% Prostate 1 1.1% Uterus and ovary 2 2.2% Unknown primary 4 4.4% Characteristics No. Percent/Range Treated vertebrae (thoracic/lumbar) 140 (71/69) No. of metastatic vertebrae treated for each patient Single 53 2 30 3 5 4 3 Type of destruction (osteolytic/mixed) 114/26 Posterior wall involvement 49/140 35% Vertebral body compression 52/140 37% Ablation power (mean) (range) (W) 29.3 (SD, 4.39) 20–40 Ablation time (mean) (range) (min) 3.48 (SD, 1.36) 2–5 Cement filling rate of the lesion 50%–75% 35 25% 75%–90% 53 37.9% ≈100% 52 37.1% Cement leakage 42/140 30% Diskal 12 Epidural 6 Paravertebral 20 Foramina 3 Access track 4 Volume of cement for each vertebra (mean) (range) (mL) 5.4 (SD, 2.4) 2–8
