Complete Arterial Supply Network of the Mammary Gland

Description

Anterior breast anatomy is rendered with lobulated adipose tissue (yellow) separated by fibrous septa consistent with the suspensory ligaments of Cooper, encasing the mammary gland lobules and their converging lactiferous ducts toward the nipple. Arterial branches course through the superficial fascia and glandular stroma, then arborize into smaller arterioles that track along septa and around lobules. Deep to the gland, the retromammary space and the pectoral fascia over pectoralis major provide a clear posterior boundary, with neurovascular elements (blue) running in parallel planes toward the nipple-areolar complex. Arterial mapping of the mammary gland matters because breast perfusion is a surgical constraint, not an afterthought. The dominant contributors typically include perforating branches of the internal thoracic (internal mammary) artery medially, the lateral thoracic artery laterally, and variable inputs from the thoracoacromial trunk and posterior intercostal arteries, a pattern that informs reduction mammaplasty pedicle selection and mastectomy flap viability. Compromise of these territories helps explain skin flap necrosis risk after nipple-sparing mastectomy and the vascular logic behind medial versus lateral pedicles. Blood supply is the story here. Use this plate for gross anatomy teaching of superficial thoracic wall vasculature, for surgical atlases covering oncoplastic approaches and reconstruction planning, or for patient-facing education that needs accurate relationships between gland, fascia, and pectoral musculature without distracting skin detail. It also supports radiology and interventional discussions where internal mammary versus lateral thoracic dominance affects biopsy planning and postoperative perfusion expectations. Anatomical accuracy verified by SciePro's Medical Advisory Board.