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  • Title: Primary pigmented nodular adrenocortical disease: diagnosis and management.
    Author: Grant CS, Carney JA, Carpenter PC, van Heerden JA.
    Journal: Surgery; 1986 Dec; 100(6):1178-84. PubMed ID: 3787476.
    Abstract:
    A rare cause of Cushing's syndrome appearing to originate in the adrenal glands is primary pigmented nodular adrenocortical disease (PPNAD). It may be variably associated with a complex of other pathologic characteristics that include cardiac myxomas, cutaneous myxomas, and lentigines, mammary myxoid lesions, testicular tumors, pituitary adenomas, and neuroectodermal tumors. We have reviewed the clinical, biochemical, radiographic, operative, and pathologic details of seven patients with PPNAD who have been evaluated at Mayo Clinic. Biochemical testing supported autonomous adrenal hyperfunction. This was based on the failure of cortisol suppression by high-dose dexamethasone, failure of pituitary stimulation by metyrapone administration, either normal or suppressed basal adrenocorticotropic hormone (ACTH) levels, normal radiographic studies of the sella turcica, and normal abdominal and thoracic computerized tomography in search of an ectopic ACTH-producing tumor. Six patients underwent bilateral total adrenalectomy without postoperative complications. Nelson's syndrome has not occurred, but acute adrenocortical insufficiency may have contributed to the death of one patient. To recognize the possible diagnosis of PPNAD preoperatively is important to proceed directly with adrenalectomy, avoiding unnecessary pituitary surgery. Moreover, if PPNAD is part of the broader pathologic complex, the possible presence of cardiac myxomas that may be multiple, recurrent, in atypical locations, and familial must be borne in mind.
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