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Related Experiment Videos

Localized dumbbell neuroblastoma: a study of 25 cases treated between 1982 and 1987 using the same protocol

D Plantaz1, O Hartmann, C Kalifa

  • 1Department of Pediatrics, Institut Gustave Roussy, Villejuif, France.

Medical and Pediatric Oncology
|January 1, 1993
PubMed
Summary

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Dumbbell neuroblastomas in children, though often causing neurological deficits, have an excellent event-free survival rate of 88%. Treatment strategies are being reevaluated to balance vital prognosis with functional outcomes.

Area of Science:

  • Pediatric Oncology
  • Neurosurgery
  • Clinical Therapeutics

Background:

  • Dumbbell neuroblastomas are a rare subtype of neuroblastoma.
  • These tumors often present with significant neurological deficits due to spinal cord compression.

Purpose of the Study:

  • To analyze therapeutic modalities for non-metastatic dumbbell neuroblastomas.
  • To reevaluate the necessity of routine initial laminectomy.
  • To discuss the role of first-line chemotherapy.

Main Methods:

  • Retrospective analysis of 25 non-metastatic dumbbell neuroblastoma cases treated between 1982-1987.
  • Evaluation of surgical excision, laminectomy, chemotherapy, and radiation therapy protocols.
  • Assessment of neurological deficits, recovery, and long-term sequelae.

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Main Results:

  • Fifteen patients (60%) had neurological deficits; 14 underwent laminectomy with varied recovery outcomes.
  • Event-free survival was 88%, linked to non-metastatic stage, young age (median 7 months), and thoracic location.
  • High rates of incomplete excision (13/25) did not compromise prognosis.

Conclusions:

  • Dumbbell neuroblastomas have an excellent vital prognosis, particularly in young children and non-metastatic cases.
  • Significant neurological (36%) and orthopedic (26%) sequelae necessitate a critical review of aggressive surgical approaches like routine laminectomy.
  • The study suggests a reevaluation of initial therapeutic strategies, including the potential role of neoadjuvant chemotherapy.