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The relationship between imaging features, therapeutic response, and overall survival in pediatric diffuse intrinsic pontine glioma

  • 0Department of Medical Imaging Center, Jinan University First Affiliated Hospital, No. 613, Huangpu Road West, Tianhe District, Guangzhou, 510630, Guangdong Province, China.
Neurosurgical Review +

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May 10, 2024

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May 10, 2024

View abstract on PubMed

Summary

This summary is machine-generated.

Tumor volume changes more accurately reflect treatment response in pediatric diffuse intrinsic pontine glioma (DIPG) than cross-product measurements. This finding is vital for improving clinical trials and patient outcomes in DIPG research.

Area Of Science

  • Pediatric Oncology
  • Neuro-oncology
  • Medical Imaging

Background

  • Diffuse intrinsic pontine glioma (DIPG) is a devastating pediatric brain tumor with poor prognosis.
  • Accurate assessment of therapeutic response is critical for guiding treatment and improving survival in DIPG patients.

Purpose Of The Study

  • To evaluate the relationship between imaging features, therapeutic responses (using comparative cross-product and volumetric measurements), and overall survival (OS) in pediatric DIPG.
  • To determine if tumor volume is a more accurate indicator of treatment response than cross-product measurements.

Main Methods

  • Retrospective analysis of 134 pediatric DIPG patients (age ≤ 18 years).
  • Univariate and multivariate analyses to correlate clinical and imaging features with OS.
  • Linear regression to assess the correlation between cross-product (CP) and volume reduction in partial response (PR).
  • Log-rank test to compare OS in patients with discordant vs. concordant response classifications.

Main Results

  • Univariate analysis identified lower Karnofsky score, larger extrapontine extension, ring enhancement, necrosis, non-partial response (non-PR), and increased post-radiotherapy enhancement as associated with worse OS.
  • Multivariate analysis revealed Karnofsky score, necrosis, extrapontine extension, and therapeutic response as predictors of OS.
  • A 25% CP reduction correlated with a 32% volume reduction (R² = 0.888).
  • Patients with discordant classifications (CP vs. volume) had a median survival of 13.0 months, significantly higher than the non-PR group (8.9 months).

Conclusions

  • Imaging features, therapeutic responses, and overall survival are significantly correlated in pediatric DIPG.
  • Tumor volume may be a more accurate measure of DIPG growth patterns and therapeutic response than CP.
  • These findings are crucial for optimizing future clinical trials in DIPG.

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