Mammary Glands

Description

Breast parenchyma is presented with emphasis on the mammary gland proper, including lobules arranged into lobes whose lactiferous ducts converge toward the nipple, with the lactiferous sinuses expected immediately deep to the areola. Fibroglandular tissue occupies the superficial anterior thoracic wall, separated from the pectoral fascia by the retromammary space, while Cooper’s (suspensory) ligaments extend from the dermis into the gland to compartmentalize and support it. Superficial subcutaneous fat and overlying skin frame the gland, with the nipple-areolar complex centrally positioned on the anterior surface. Ductal anatomy matters because many common presentations arise along this pathway, from periductal mastitis and subareolar abscess to bloody nipple discharge from intraductal papilloma. Most breast carcinomas originate from the terminal duct lobular unit, so a clear duct-to-lobule relationship helps when teaching why screening mammography targets architectural distortion and why ductal carcinoma in situ tracks along ductal segments rather than forming a discrete mass early. Lymphatic drainage is often taught alongside this topic, but the duct system remains the practical map for correlating discharge, duct excision (microdochectomy), and image-guided biopsy planning. Suitable for undergraduate gross anatomy, histology, and breast imaging lectures that need a clean overview of lobules and ducts without distracting regional detail. Medical publishers can pair it with content on benign breast disease, lactation physiology, or surgical approaches to subareolar lesions and duct exploration. Anatomical accuracy verified by SciePro's Medical Advisory Board.