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Proton Therapy Delivery and Its Clinical Application in Select Solid Tumor Malignancies
Published on: February 6, 2019
Aggressive surgical therapy and radiotherapy for patients with high-risk neuroblastoma treated with rapid sequence
Daniel von Allmen1, Stephan Grupp, Lisa Diller
1Division of Pediatric Surgery, Department of Surgery, University of North Carolina, Chapel Hill, NC 27599, USA. vonallme@med.unc.edu
Background/Purpose:
The treatment approach for patients with high-risk neuroblastoma has been one of dose intensification chemotherapy and aggressive treatment of the primary tumor. Local tumor control is examined in high-risk patients treated with tandem stem cell transplant, aggressive surgery, and selected radiation therapy (XRT).
Methods:
Seventy-six patients with high-risk stage III/IV neuroblastoma were treated on a standard protocol incorporating aggressive surgical resection with or without local XRT followed by tandem high-dose chemotherapy and stem cell rescue. Patients were evaluated for degree of surgical resection, site of progression, and outcome.
Results:
Overall event-free survival for the series is 56%. Forty-eight had gross total resection, 12 had greater than 90% resection, 10 had 50% to 90% resection, and 6 had biopsy only or no surgery. Surgical complications occurred in 29% with no deaths. There were no isolated local failures. Two patients had local recurrence after gross total resection. Surgeon assessment of completeness of resection agreed with postoperative radiological findings 66% of the time.
Conclusion:
Aggressive surgical treatment with local XRT and myeloablative chemotherapy with stem cell rescue provides excellent local control in high-risk neuroblastoma, although distant failures, particularly osseous, remain a problem. Poor correlation exists between the surgeon's perception of completeness of resection and findings on postoperative imaging studies.