Objective: To retrospectively analyze the outcomes and complications of patients with metastatic thoracic spinal tumors (MTTs) who underwent posterior corpectomies.
Methods: Ninety patients with MTTs who underwent posterior corpectomies were retrospectively analyzed. Characteristics evaluated included number of MTTs per year, location, involved vertebrae numbers, sex, histology, pre- and postoperative American Spinal Injury Association (ASIA) grade, visual analog scale (VAS) pain scores, operative time, blood loss, and length of hospital stay.
Results: The average follow-up was 20.8 ± 27.9 months (range, 0.5-139.4 months). Of the patients, 76.67% had a single metastasis and 23.33% had multiple metastases. For histology, 16.67% were breast, 15.56% were lung, 12.22% were prostate, and 12.22% were renal cell carcinoma. Of the patients with paraplegia and paraparesis, 74% improved. One patient improved from ASIA grade A to D, 3 patients improved from grade B to C, 8 patients improved from grade C to D or E, and 25 patients improved from grade D to E. Three patients (6%) with ASIA grade A and 1 patient (2%) with ASIA grade B had no improvement. One patient with ASIA grade C and 8 patients (16%) with grade D had no improvement. After surgery, VAS pain scores decreased from 8.45 ± 1.57 to 1.211 ± 1.81. In terms of complications, 2 patients (2.22%) had deep vein thrombosis and 1 patient had pulmonary embolism (1.11%). Other complications included wound infection (4.44%), cerebrospinal fluid leak (4.44%), pleural effusion (3.33%), wound dehiscence (2.22%), cellulitis (1.11%), epidural hematoma (1.11%), and pneumothorax (1.11%). Of the patients, 2.22% had implant failure and pseudoarthrosis, with 1 patient needing revision surgery. One patient (1.11%) had tumor recurrence.
Conclusions: Our results suggest that posterior thoracic corpectomies for MTTs have a reasonable complication rate with favorable outcomes.
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