World Journal of Surgery

, Volume 32, Issue 5, pp 882–889 | Cite as

The Role of Unilateral Adrenalectomy in ACTH-Independent Macronodular Adrenal Hyperplasia (AIMAH)

  • Maurizio IacoboneEmail author
  • Nora Albiger
  • Carla Scaroni
  • Franco Mantero
  • Ambrogio Fassina
  • Giovanni Viel
  • Mauro Frego
  • Gennaro Favia



ACTH-independent macronodular adrenal hyperplasia (AIMAH) is a rare cause of Cushing’s syndrome. Bilateral adrenalectomy is considered the treatment of choice, with subsequent lifetime steroid replacement, but unilateral adrenalectomy has been recently proposed to reduce the secreting tissue. This prospective study was designed to evaluate the long-term results of unilateral adrenalectomy in AIMAH concerning the main laboratory and clinical abnormalities and the patient’s quality of life.


Seven consecutive patients with confirmed AIMAH underwent unilateral adrenalectomy of the largest gland. ACTH and cortisol levels, arterial blood pressure (BP), glycometabolic parameters, and patient’s subjective perception of health-related quality of life (by the SF-36 questionnaire) were measured preoperatively and postoperatively.


No surgery-related morbidity occurred. One patient with a large contralateral adrenal enlargement required a completion adrenalectomy after 7 months because of persistent hypercortisolism. At a median follow-up of 53 (range, 27–68) months, the remaining six patients were cured, because serum and urinary free cortisol levels significantly decreased and ACTH increased, thus regaining the normal range. Both systolic and diastolic BP levels significantly reduced: 50% of patients definitively became normotensive, and the remaining patients reduced the need for antihypertensive treatment; 40% of patients suffering from preoperative diabetes were cured, whereas 40% reduced the need for hypoglycemizing drug. SF-36 evaluation of the health-related quality of life confirmed a significant amelioration.


Unilateral adrenalectomy of the largest gland can be an effective and safe treatment for AIMAH in case of asymmetric involvement. It may achieve long-term remission of Cushing’s syndrome and improve BP values, glycemic control, and patient’s quality of life.


Physical Component Summary Mental Component Summary Gastric Inhibitory Polypeptide Bilateral Adrenalectomy Diastolic Blood Pressure Level 
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Copyright information

© Société Internationale de Chirurgie 2008

Authors and Affiliations

  • Maurizio Iacobone
    • 1
    Email author
  • Nora Albiger
    • 2
  • Carla Scaroni
    • 2
  • Franco Mantero
    • 2
  • Ambrogio Fassina
    • 3
  • Giovanni Viel
    • 1
  • Mauro Frego
    • 1
  • Gennaro Favia
    • 1
  1. 1.Endocrine Surgery Unit, Department of Surgical and Gastroenterological SciencesUniversity of PaduaPadovaItaly
  2. 2.Endocrinology Unit, Department of Medical and Surgical SciencesUniversity of PaduaPadovaItaly
  3. 3.Department of PathologyUniversity of PaduaPadovaItaly

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