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肾上腺髓质增生是近３０年来逐渐被人们认识的一种少见病，病因尚不清楚。发病可能与环境因素、遗传因素及交感神经系统等多种因素有关。本文就其病因学作一综述。
Adrenal medulla hyperplasia is gradually recognized by people in the past 30 years a rare disease, the cause is not clear. The incidence may be related to environmental factors, genetic factors and the sympathetic nervous system and other factors. This article reviews its etiology.