[Diagnostic value of imaging in localizing primary aldosteronism]

Area of Science:

• Endocrinology
• Surgical Oncology
• Medical Imaging

Background:

• Primary aldosteronism is a significant cause of secondary hypertension.
• Surgical intervention is a primary treatment modality for aldosteronomas.
• Accurate preoperative localization of aldosteronomas is essential for successful surgical outcomes.

Purpose of the Study:

• To evaluate the diagnostic accuracy of B-type ultrasonography, computed tomography (CT), and scintigraphy in localizing aldosteronomas.
• To compare the effectiveness of different imaging modalities for preoperative localization of aldosteronomas.
• To determine the overall accuracy of imaging-guided surgical exploration for primary aldosteronism.

Main Methods:

• Retrospective analysis of 159 patients with primary aldosteronism treated surgically from May 1985 to March 1993.
• Comparison of preoperative imaging results (ultrasonography, CT, scintigraphy) with pathological findings in 103 patients.
• Assessment of the accuracy rates for each imaging modality.

Main Results:

• B-type ultrasonography demonstrated the highest accurate rate (80.6%), followed by CT (75.8%) and scintigraphy (67.4%).
• A routine approach using sonography and CT, with scintigraphy as a supplementary method when needed, was employed.
• Surgical explorations, guided by imaging and clinical data, achieved an overall accurate rate of 96.1%.

Conclusions:

• Ultrasonography and CT are reliable primary imaging modalities for aldosteronoma localization.
• The combined use of imaging techniques and clinical data significantly enhances the accuracy of surgical planning and execution.
• Optimized imaging strategies contribute to improved surgical success rates in managing primary aldosteronism.