[Lymphogranulomatosis: diagnosis by conventional roentgen studies and computed tomography]

Area of Science:

• Oncology
• Radiology
• Medical Imaging

Background:

• Hodgkin's disease diagnosis and staging traditionally relied on various imaging modalities.
• Computed tomography (CT) has become a crucial tool in evaluating nodal and extranodal involvement.
• Assessing thoracic wall extension and pericardial/vascular invasion is critical for treatment planning.

Purpose of the Study:

• To evaluate the diagnostic utility of computed tomography (CT) in staging Hodgkin's disease.
• To compare CT findings with other imaging techniques like lymphography and sonography.
• To determine the role of CT in assessing treatment response and recurrence.

Main Methods:

• Review of CT scans in patients with Hodgkin's and non-Hodgkin's lymphomas.
• Comparison of CT findings with lymphography and sonography in a series of 68 patients.
• Analysis of CT's sensitivity in detecting nodal, extranodal, liver, and spleen lesions.

Main Results:

• CT significantly improved diagnostics for nodal and extranodal Hodgkin's disease.
• CT is vital for assessing thoracic wall, pericardial, and vascular invasion.
• CT visualized all lymph node groups but could not assess lymph node structure.
• Retroperitoneal lesions were detected by CT in 77% and by lymphography in 90% of cases.
• CT showed limited sensitivity for spleen and liver lesions.
• Percutaneous biopsy is recommended for recurrence diagnosis and residual tumor assessment.

Conclusions:

• Computed tomography is a valuable tool for staging Hodgkin's disease, particularly for thoracic involvement.
• CT complements other methods like lymphography and sonography, with biopsy essential for specific diagnostic needs.
• While CT excels in visualizing lymph node spread, its limitations in assessing lymph node structure and detecting visceral lesions necessitate a multimodal imaging approach.