Role of 2-(fluorine-18) Fluoro-2-deoxy-D-glucose Positron Emission Tomography/Computed Tomography in Initial Staging and Bone Marrow Involvement Prediction in Patients with Newly Diagnosed Lymphoma in Correlation with Bone Marrow Study

  • 0Department of Nuclear Medicine, AII India Institute of Medical Sciences, Raipur, Chhattisgarh, India.

Summary

This summary is machine-generated.

18F-FDG PET-CT effectively detects bone marrow involvement in lymphoma patients, potentially obviating the need for invasive bone marrow biopsy. This imaging technique aids in disease staging and treatment decisions.

Area Of Science

  • Oncology
  • Nuclear Medicine
  • Radiology

Background

  • Lymphoma diagnosis and staging are critical for patient prognosis.
  • Bone marrow biopsy is the standard for detecting bone marrow infiltration but is invasive.
  • 18F-FDG PET-CT offers a non-invasive method for assessing metabolic activity and detecting disease involvement.

Purpose Of The Study

  • To evaluate the utility of 18F-FDG PET-CT in detecting bone marrow and extra-medullary organ involvement in lymphoma.
  • To correlate FDG uptake patterns in the bone marrow with bone marrow study findings.
  • To assess the role of 18F-FDG PET-CT in lymphoma staging.

Main Methods

  • Thirty newly diagnosed lymphoma patients underwent 18F-FDG PET-CT.
  • Bone marrow uptake was categorized (diffuse, unifocal, multifocal, no uptake).
  • Agreement between PET-CT and bone marrow study was assessed using Cohen's kappa; sensitivity, specificity, PPV, and NPV were calculated.

Main Results

  • 18F-FDG PET-CT demonstrated 86.6% sensitivity and 77.7% specificity for detecting bone marrow involvement.
  • A moderate agreement (Cohen's kappa = 0.6) was found between PET-CT and bone marrow study.
  • The imaging detected bone marrow involvement in 13 of 15 positive cases across Hodgkin lymphoma and non-Hodgkin lymphoma.

Conclusions

  • 18F-FDG PET-CT is a sensitive tool for identifying extra-nodal involvement and bone marrow infiltration in lymphoma.
  • While not a complete replacement for bone marrow biopsy, PET-CT can help avoid invasive procedures in select cases.
  • PET-CT findings can significantly impact disease staging and influence treatment strategies.