Abstract：
A 9-year-old premenarchal female presented to pediatric dermatology with a 6-month history of periodically tender, bilateral and symmetric axillary masses. Magnetic resonance imaging and subsequent surgical excision confirmed the diagnosis of bilateral accessory axillary breast tissue. Accessory axillary breast tissue is a rare condition seen most in pubertal, pregnant and breastfeeding women. However, it can arise in pre-adolescent patients and should be added to the differential diagnosis of an axillary mass.
摘要：
一名9岁的初潮前女性出现在儿科皮肤科，有6个月的周期性触痛史，双侧和对称腋窝肿块。磁共振成像和随后的手术切除证实了双侧副腋窝乳腺组织的诊断。副腋窝乳腺组织是一种罕见的疾病，最常见于青春期，孕妇和哺乳期妇女。然而,它可能出现在青春期前患者中，应添加到腋窝肿块的鉴别诊断中。
