Primary adrenal insufficiency is most frequently caused by autoimmune adrenalitis, and hypothalamic-pituitary tumors represent the most frequent cause of secondary adrenal insufficiency.

原发性肾上腺功能不全绝大多数是由自身免疫性肾上腺炎引起，而对于下丘脑-垂体瘤则是继发性肾上腺功能不全的主要原因。

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The results suggested that the low levels of cortisol and UFC were a common feature in the most of patients both with primary or secondary adrenal insufficiency.

结果表明，皮质醇和UF C水平降低是绝大多数肾上腺皮质功能减退症病人的特征。

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