Background
Phase III RCT. 101 patients with metastatic epidural spinal cord compression (ESCC) confirmed by MRI — single site, ambulatory or non-ambulatory. Randomized to direct decompressive surgery followed by RT vs RT alone (30 Gy/10 fractions). Enrolled 2001–2003; stopped early for superiority. Landmark trial defining role of surgery in ESCC.
Interventions and follow up
Arm A: Direct decompressive surgery (circumferential decompression + instrumented stabilization) → RT 30 Gy/10 fractions within 14 day
Arm B: RT alone: 30 Gy in 10 fractio
Primary endpoint: Ability to walk after treatment (ambulation)
mFollow up: 90 day
Arm B: RT alone: 30 Gy in 10 fractio
Primary endpoint: Ability to walk after treatment (ambulation)
mFollow up: 90 day
Results
Ambulation post-treatment (surgery + RT): 84% vs RT alone 57%, P=.001
Ambulation maintenance (previously ambulatory): 122 days (surgery) vs 13 days (RT), P=.003
OS: 126 days (surgery + RT) vs 100 days (RT), P=.03
Bladder/bowel function: Better preserved in surgery arm
Ambulation maintenance (previously ambulatory): 122 days (surgery) vs 13 days (RT), P=.003
OS: 126 days (surgery + RT) vs 100 days (RT), P=.03
Bladder/bowel function: Better preserved in surgery arm
Adverse events
Main adverse events: Surgery + RT: wound complications 12%, deep vein thrombosis 8%, pulmonary embolism 4%. RT alone: no procedural complications; radiation myelopathy rare at 30 Gy. Steroid requirement: higher in RT-alone arm post-treatment.
Conclusions
Direct decompressive surgery followed by RT significantly improved walking ability, duration of ambulation, bladder/bowel function, and OS compared to RT alone for ESCC. Surgery + RT should be the standard for patients with good performance status, solitary cord compression, and favorable prognosis.
Key Limitations
Key Limitations: Trial stopped early at 50% accrual — potential for overestimation of benefit. Excluded patients with radiosensitive histologies (lymphoma, myeloma, SCLC) — where RT alone may be equivalent. Excluded multiple levels of compression. Surgical expertise and risk must be carefully weighed; results may not apply at low-volume centers.
Clinical Context
Patchell 2005 is the definitive evidence supporting surgery + RT over RT alone for solid tumor ESCC with good PS and solitary compression. Current NCCN guidelines recommend surgical decompression for ESCC when: good PS, >3 month expected survival, solitary level, radioresistant histology, and prior RT. RT alone is appropriate for radiosensitive histologies or poor surgical candidates.
References