An adrenal lipoma is an extremely rare macroscopic fat-containing adrenal lesion, with only a handful of cases described in the literature 1.
Pathology
Like other lipomas elsewhere in the body, they are benign tumors of mesenchymal origin that contain mature fatty tissue and are surrounded by a fibrous capsule.
Radiographic features
CT/MRI
Appears as a well-circumscribed, homogeneous, fatty lesion with minimal or no soft-tissue attenuation / signal within the lesion.
Differential diagnosis
For macroscopic fat containing adrenal lesions consider
- adrenal myelolipoma: most common macroscopic fat containing adrenal lesion