Pseudocysts do not have an epithelial lining and typically arise after an episode of adrenal hemorrhage. There is an ~7% association with malignancy (e.g. from hemorrhage into a cystic adrenal neoplasm) .
Adrenal pseudocysts appear as a simple cyst or may have a complicated appearance (i.e. septations, blood products, or a soft-tissue component).
Calcification may be present . Usually, there is no enhancement post contrast.
Imaging differential considerations include:
- cystic adrenal neoplasm: often has an enhancing component