Incidentaloma MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Mohammed Abdelwahed M.D[2]

Overview

Adrenal MRI may be helpful in the diagnosis of incidentaloma. Findings on MRI suggestive of incidentaloma include mild enhancement and a rapid washout of contrast, while malignant lesions show rapid and marked enhancement and a slower washout pattern. MRI has advantages in certain clinical situations. The advantages of MRI over CT are its lack of radiation exposure, lack of iodine-based contrast media and its superior tissue contrast resolution.

MRI

  • Adrenal MRI may be helpful in the diagnosis of incidentaloma.[1]
    • MRI rather than CT is suggested if adrenal imaging is required in children, adolescents, pregnant females, and adults younger than 40 years of age.

Chemical shift

MRI shows left adrenal mass with loss of signal on out-of-phase imaging, source; Case courtesy of A.Prof Frank Gaillard, Radiopaedia.org, rID: 2600


References

  1. Sahdev A (2017). "Recommendations for the management of adrenal incidentalomas: what is pertinent for radiologists?". Br J Radiol. 90 (1072): 20160627. doi:10.1259/bjr.20160627. PMID 28181818.
  2. Peppercorn PD, Grossman AB, Reznek RH (1998). "Imaging of incidentally discovered adrenal masses". Clin Endocrinol (Oxf). 48 (4): 379–88. PMID 9640401.
  3. Sahdev A, Reznek RH (2004). "Imaging evaluation of the non-functioning indeterminate adrenal mass". Trends Endocrinol Metab. 15 (6): 271–6. doi:10.1016/j.tem.2004.06.012. PMID 15358280.
  4. Israel GM, Korobkin M, Wang C, Hecht EN, Krinsky GA (2004). "Comparison of unenhanced CT and chemical shift MRI in evaluating lipid-rich adrenal adenomas". AJR Am J Roentgenol. 183 (1): 215–9. doi:10.2214/ajr.183.1.1830215. PMID 15208141.
  5. Young WF (2011). "Conventional imaging in adrenocortical carcinoma: update and perspectives". Horm Cancer. 2 (6): 341–7. doi:10.1007/s12672-011-0089-z. PMID 21997291.
  6. Haider MA, Ghai S, Jhaveri K, Lockwood G (2004). "Chemical shift MR imaging of hyperattenuating (>10 HU) adrenal masses: does it still have a role?". Radiology. 231 (3): 711–6. doi:10.1148/radiol.2313030676. PMID 15118113.

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