Adrenal adenoma

Case contributed by Frank Gaillard
Diagnosis certain


Incidental finding.

Patient Data

Age: 35 years
Gender: Male

Note: This case has been tagged as "legacy" as it no longer meets image preparation and/or other case publication guidelines.


A well defined homogenous nodular mass lesion is seen in left adrenal gland with HU~45 on non-contrast scan.


    MRI demonstrates convincing signal dropout in out-of-phase T1 imaging, confirming that this represents an adrenal adenoma. 

    Also not the signal drop out of the liver consistent with hepatic steatosis.

    Case Discussion

    Adrenal adenomas can be detected on non-contrast scans due to its low HU (<10 HU is highly specific). However, MRI is indicated in ambiguous lesions with higher HU corresponding to soft tissue. Due to microscopic lipid-rich content, signal drop out is seen in opp-phase.

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