Retroareolar cysts are benign breast lesions caused by the obstruction and consequent dilatation of Montgomery tubercles. Herein, we report two cases of premenarchal girls who developed retroareolar cysts. Their course and differential diagnosis are discussed.

中文翻译：

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青春期女孩乳头乳晕复合体的均匀蓝色肿块

乳晕后囊肿是由蒙哥马利结节阻塞和随后扩张引起的良性乳房病变。在此，我们报告了两例发生乳晕后囊肿的初潮前女孩。讨论了他们的病程和鉴别诊断。