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Gallium-67 Uptake by a Benign Adrenocortical Adenoma

Departments of Medicine, Radiology and Surgery, Scott and White Clinic, Scott and White Memorial Hospital, Scott, Sherwood
Brindley Foundation, Texas A&M University College of Medicine

Correspondence: For reprints contact: L. Gill Naul, MD, Dept. of Radiology, Scott and White Clinic, 2401 South 31st St., Temple, TX 76508.

ABSTRACT

A 55-yr-old man presented with an atypical relapsing meningitis and was found to have intense unilateral adrenal uptake by ⁶⁷Ga Imaging. Computed tomography showed a 4-cm right adrenal mass which was hypointense on the T1-weighted images and mildly hyperintense on the T2-weighted images of a magnetic resonance (MR) scan. At surgery, a coincidental benign adrenocortical adenoma was found. Because ⁶⁷Ga uptake is usually associated with inflammatory or malignant lesions and malignant adrenal lesions are hyperintense on T2-weighted MR images, these findings contributed to diagnostic uncertainty in this patient. Thus, a nonhyperfunctional adrenocortical adenoma may be associated with abnormal ⁶⁷Ga uptake and atypical MR findings.