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Percutaneous computed tomography-guided ethanol injection in aldosterone-producing adrenocortical adenoma

Rossi R, Savastano S, Tommaselli AP, Valentino R, Iaccarino V, Tauchmanova L, Luciano A, Gigante M, Lombardi G. Percutaneous computed tomography-guided ethanol injection in aldosteroneproducing adrenocortical adenoma. Eur J Endocrinol 1995;132:302–5. ISSN 0804–4643

The feasibility, safety and effectiveness of percutaneous computed tomography-guided ethanol injection (PEI-CT) was investigated in a patient affected by aldosterone-producing adenoma (APA). A 42-year-old male patient with typical features of hyperaldosteronism presented a solitary left adrenal adenoma measuring 2 cm, with a normal contralateral gland, evidenced by both CT scan and adrenal [⁷⁵Se-19]-nor-cholesterol scintigraphy. After normalization of potassium plasma levels, 4 ml of sterile 95% ethanol with 0.5 ml of 80% iothalamate sodium was injected. The procedure was completed in about 30 min. No severe pain or local complication was noted. Five hours after PEI, a fourfold and a twofold increase in aldosterone and cortisol plasma levels were observed, respectively. After 11 days on a normal sodium and potassium diet, normal potassium plasma levels and reduced aldosterone plasms levels were present, with reappearance of an aldosterone postural response. Plasma renin activity and aldosterone plasma levels normalized I month later, with reappearance also of a plasma renin activity postural response and maintenance of normal potassium plasma levels even on a high sodium and normal potassium diet. The patient has remained hypertensive, although lower antihypertensive drug dosages have been employed. After 17 months, normal biochemical, hormonal and morphological findings were still present. Thus, we suggest PEI-CT as a further alternative approach to surgery in the management of carefully selected patients with APA.

Riccardo Rossi, Chair of Endocrinology, "Federico II" University of Naples, via Sergio Pansini 5, 80131 Naples, Italy

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