Definition
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• Milk filled cavity beneath areola, usually due to abrupt suppression of lactation

Case reports
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• Male infant with hyperprolactinemia and bilateral galactocele (Int J Pediatr Endocrinol 2009;2009:578610)
• 36 year old woman with mass arising in accessory breast tissue in axilla (Arch Gynecol Obstet 2007;276:379)
• 37 year old nulliparous woman with prolactinoma (Maturitas 2009;62:98)
• 54 year old postmenopausal woman (Breast Cancer Res 2000;2:A53)
• Due to augmentation mammoplasty (Aesthetic Plast Surg 2005;29:274)

Treatment
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• Aspiration or no treatment

Clinical images
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Large cystic cavity

Micro description
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• Dilated, anastomosing, epithelium lined channels, often with secretory activity
• Cyst contents may leak into adjacent tissue and cause lipogranulomatous reaction with foamy macrophages (J Cutan Pathol 2010;37:973)

Cytology images
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27 year old woman with 1.5 cm nontender breast nodule and FNAC

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