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Commonly encountered adrenal pseudotumours on CT
T Gokan1, Y Ohgiya, H Nobusawa
1Department of Radiology, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8666, Japan.
The British Journal of Radiology
|February 1, 2005
Summary
Adrenal pseudotumors on CT scans can mimic real tumors but have various causes like gastric diverticula or splenic lobulations. Multiplanar reconstruction with CT and MRI helps differentiate these pseudotumors from actual adrenal masses.
Area of Science:
- Radiology
- Medical Imaging
- Abdominal Imaging
Background:
- Adrenal pseudotumors present a diagnostic challenge on computed tomography (CT).
- Accurate differentiation from true adrenal neoplasms is crucial for appropriate patient management.
- Several non-adrenal pathologies can mimic adrenal masses on cross-sectional imaging.
Purpose of the Study:
- To identify common causes of adrenal pseudotumors on CT.
- To evaluate the utility of multiplanar reconstruction in characterizing these findings.
Main Methods:
- Review of CT scans demonstrating adrenal pseudotumors.
- Correlation with multiplanar reformatted images (CT and MRI).
- Identification of characteristic features of mimicking lesions.
Main Results:
- Identified causes include gastric diverticulum, prominent splenic lobulation, upper-pole renal mass, pancreatic mass, hepatic mass, and periadrenal varices.
- Multiplanar reconstruction aids in elucidating the origin and nature of these pseudotumors.
- Axial images, in conjunction with multiplanar views, are essential for accurate diagnosis.
Conclusions:
- A diverse range of intra-abdominal pathologies can manifest as adrenal pseudotumors on CT.
- Advanced imaging techniques, particularly multiplanar reconstruction, are vital for differentiating pseudotumors from true adrenal lesions.
- Awareness of these mimics improves diagnostic accuracy in abdominal imaging.