To biopsy or not to biopsy adrenal mass: is that the question?

The European Society of Endocrinology recommends surgical approach for suspicious adrenal mass with a limited role for adrenal biopsy. We report here a case of a patient with a 70 mm adrenal mass in whom adrenal biopsy avoided unnecessary adrenalectomy. An 80-year-old man was explored for a 67 × 41 mm suspect left adrenal tumor. Hormonal explorations were normal. 18F-FDG-PET/CT showed an increase in uptake of the adrenal mass (SUVmax: 44.6). As the diagnostic was uncertain, biopsy was performed. Pathology found T lymphocytic inflammatory infiltrate with CD4 phenotype without malignancy criteria. Simple close monitoring was decided in multidisciplinary meeting and with the patient's consent. At 1 and 3 months, CT and 18F-FDG-PET/CT showed a significant decrease in size and uptake of adrenal mass (40 × 20 mm and 19 × 10 mm and SUVmax 5.9 and 0.0). This report shows the interest of adrenal biopsy for well-selected cases to avoid unnecessary adrenal surgery.

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The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.