Adrenal adenoma (chemical shift imaging)
Incidentally detected adrenal lesion on sonography. Patient was evaluated by sonography for irregular menses.
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The signal drop in the out of phase imaging within the right adrenal lesion signifies presence of intracellular fat.
Adrenal adenomas are the commonest primary adrenal lesion. Contrast multiphasic CT (adrenal protocol) and chemical shift MRI imaging have high sensitivity and specificity for identifying adrenal adenomas.
- Siegelman ES. MR imaging of the adrenal neoplasms. Magn Reson Imaging Clin N Am. 2001;8 (4): 769-86. Pubmed citation