Simpson J L, Horwith M, Morillo-Cucci G, McGovern J H, Levine M I, German J
Birth Defects Orig Artic Ser. 1971 May;7(6):196-200.
The bilateral absence of testes is described in one of two otherwise healthy and well-developed 12-year-old identical twin boys. The twins' father has only one palpable testis. The occurrence of complete anorchia in only one of otherwise identical twins constitutes relevant new data for considering the etiology of this rare condition and in assaying the role of the testis in growth and development between birth and puberty.
在两个原本健康且发育良好的12岁同卵双胞胎男孩中，有一个被描述为双侧睾丸缺失。这对双胞胎的父亲只有一个可触及的睾丸。仅在其中一个同卵双胞胎中出现完全无睾症，为考虑这种罕见病症的病因以及分析睾丸在出生至青春期之间的生长和发育中的作用提供了相关的新数据。
