Primitive neuroectodermal tumor and extraskeletal Ewing sarcoma arising primarily around the spinal column: report of four cases and a review of the literature.

STUDY DESIGN

Report of four cases and a review of the literature.

OBJECTIVES

To study the clinical features and prognosis of primitive neuroectodermal tumor or extraskeletal Ewing sarcoma arising around the spinal column.

SUMMARY OF BACKGROUND DATA

Primitive neuroectodermal tumor or extraskeletal Ewing sarcoma that originates around the spinal column is very rare, and its prognosis is very poor.

METHODS

Four patients were diagnosed and underwent treatment.

RESULTS

Although all the patients received high-dose chemotherapy with or without radiotherapy after surgery, three patients died of the disease. Only one patient who received en bloc resection of the tumor combined with multiagent chemotherapy followed by high-dose chemotherapy with peripheral blood stem cell transplantation remains alive and continues to be disease free.

CONCLUSION

The prognosis of the patients with primitive neuroectodermal tumor or extraskeletal Ewing sarcoma around the spinal column is very poor. Multiagent chemotherapy combined with en bloc resection and radiation therapy is the preferred treatment for patients with primitive neuroectodermal tumor or extraskeletal Ewing sarcoma around the spinal column.