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Abstract
We present herein a case of right axillary accessory breast associated with galactorrhea in an adolescent girl. A 14-year-old Japanese girl presented with an 11-month history of a tender, subcutaneous lesion in the right axillary fossa. Seven months later, she experienced menarche. Subsequently, the patient noticed pressure-induced galactorrhea from both nipples. Physical examination revealed an elastic, firm and well-demarcated subcutaneous tumor 3 × 2 cm in size. A biopsy specimen showed proliferation of mammary gland tissue in the stroma located below the subcutaneous fat tissue. On the basis of these findings the patient was diagnosed with an accessory breast. Interestingly, the galactorrhea ceased after surgical removal of the accessory breast.
Figures and Tables
Figure 1 Histopathological findings. (A) Groups of proliferating and branching ductal structures embedded in a fibrous connective tissue stroma in the subcutaneous fat tissue (haematoxylin and eosin, original magnification x6.25). (B) Dilated ducts with intraluminal secretion are lined by cuboidal cells. The connective tissue stroma was sparse around the ducts (haematoxylin and eosin, original magnification x100).
