Hodgkin disease: contributions of chest CT in the initial staging evaluation

Area of Science:

• Oncology
• Radiology
• Medical Imaging

Background:

• Hodgkin disease diagnosis and staging rely heavily on imaging.
• Chest radiographs are standard, but their limitations in detecting intrathoracic disease are known.
• Accurate staging is crucial for effective treatment planning in Hodgkin disease.

Purpose of the Study:

• To compare the diagnostic yield of chest radiographs and chest computed tomography (CT) scans in newly diagnosed Hodgkin disease.
• To assess the impact of discordant findings on clinical management.
• To determine the value of routine chest CT in patients planned for radiation therapy.

Main Methods:

• Prospective comparison of chest radiographs and chest CT scans in 203 patients with newly diagnosed Hodgkin disease.
• Tabulation of positive findings across six intrathoracic lymph node groups, lung parenchyma, pericardium, pleura, and chest wall.
• Assessment of discordant cases to evaluate impact on treatment decisions.

Main Results:

• Chest CT scans revealed additional evidence of disease involvement at various anatomic sites, with a range of 0% to 15%.
• Treatment plans were altered in 9.4% of all patients (19 of 203).
• Treatment alteration rates were higher in patients receiving radiation therapy alone (13.8%) compared to combined-modality treatment (8.2%).

Conclusions:

• Routine chest CT examinations are valuable in the clinical management of Hodgkin disease patients.
• Chest CT provides crucial additional information that can alter treatment strategies, especially for patients undergoing radiation therapy.
• The findings support the integration of chest CT into the standard workup for newly diagnosed Hodgkin disease when radiation therapy is considered.