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Adrenal imaging. Computed tomographic scanning and magnetic resonance imaging
1Harbor/UCLA Medical Center, Torrance.
The Urologic Clinics of North America
|August 1, 1989
Summary
Adrenal MRI requires functional tests for cortical assessment. For medullary conditions like pheochromocytomas, MRI excels in staging and localization, while CT is preferred for Cushing's and Conn's syndromes.
Area of Science:
- Radiology
- Endocrinology
- Oncology
Background:
- Adrenal imaging plays a crucial role in diagnosing and managing adrenal gland disorders.
- Accurate localization and characterization of adrenal masses are essential for appropriate treatment planning.
Purpose of the Study:
- To review the utility of Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) in adrenal assessment.
- To highlight the importance of integrating functional biochemical data with imaging modalities.
Main Methods:
- Review of existing literature on adrenal imaging techniques.
- Analysis of MRI and CT performance in evaluating cortical and medullary adrenal conditions.
- Emphasis on the role of functional tests like scintigraphy (NP-59 and MIBG).
Main Results:
- MRI, when combined with functional biochemical data (scintigraphy), is necessary for assessing cortical adrenal function.
- MRI offers excellent staging and localization for medullary adrenal hyperfunction, including pheochromocytomas and neuroblastomas.
- CT is the preferred imaging modality for biochemically confirmed hyperfunction syndromes like Cushing's and Conn's.
Conclusions:
- The choice of imaging modality for adrenal disorders depends on whether the condition is cortical or medullary and its biochemical status.
- Functional biochemical data are indispensable for comprehensive adrenal assessment, particularly for cortical lesions.
- MRI and CT serve complementary roles in the evaluation of adrenal pathology.