This paper from Memorial Sloan-Kettering Cancer Center describes the NOMS framework for treating spinal metastases. NOMS structures every decision into four sequential assessments: Neurologic, Oncologic, Mechanical, and Systemic. It synthesizes supporting literature and institutional experience to codify when to use cEBRT, SRS, or surgery — and in what combination.
Run NOMS in order every time you see a patient with spinal metastases. Start with histology: myeloma, lymphoma, and seminoma get cEBRT regardless of ESCC grade. Surgery is never indicated on neurologic or oncologic grounds alone for these histologies — even high-grade cord compression will decompress with radiation as the tumor undergoes mitotic cell death.
For radioresistant tumors (renal, colon, melanoma, sarcoma), ESCC grade drives the decision. Low-grade ESCC (grades 0, 1a, 1b) goes straight to SRS. High-grade ESCC (grades 2-3) requires separation surgery first: your job is to create 2 mm of tumor-cord distance so postoperative SRS can safely deliver 24 Gy to the residual mass without exceeding the 14 Gy cord constraint.
Check SINS independently for every patient. A score of 13 or higher is a surgical indication that stands alone, regardless of what the neurologic and oncologic arms show. Mechanical instability does not respond to radiation; only stabilization restores spinal integrity.
Know the ESCC six-point grading system and the three SINS cutoffs cold. Both are SOSG-validated tools that drive real treatment decisions at every spine oncology center and are high-yield board exam material.
This paper from Memorial Sloan-Kettering Cancer Center describes the NOMS framework for treating spinal metastases. NOMS structures every decision into four sequential assessments: Neurologic, Oncologic, Mechanical, and Systemic. It synthesizes supporting literature and institutional experience to codify when to use cEBRT, SRS, or surgery — and in what combination.
Run NOMS in order every time you see a patient with spinal metastases. Start with histology: myeloma, lymphoma, and seminoma get cEBRT regardless of ESCC grade. Surgery is never indicated on neurologic or oncologic grounds alone for these histologies — even high-grade cord compression will decompress with radiation as the tumor undergoes mitotic cell death.
For radioresistant tumors (renal, colon, melanoma, sarcoma), ESCC grade drives the decision. Low-grade ESCC (grades 0, 1a, 1b) goes straight to SRS. High-grade ESCC (grades 2-3) requires separation surgery first: your job is to create 2 mm of tumor-cord distance so postoperative SRS can safely deliver 24 Gy to the residual mass without exceeding the 14 Gy cord constraint.
Check SINS independently for every patient. A score of 13 or higher is a surgical indication that stands alone, regardless of what the neurologic and oncologic arms show. Mechanical instability does not respond to radiation; only stabilization restores spinal integrity.
Know the ESCC six-point grading system and the three SINS cutoffs cold. Both are SOSG-validated tools that drive real treatment decisions at every spine oncology center and are high-yield board exam material.