All textbooks of general pathology list the breast in the "Contents" with other organs of the body under consideration there. None include the breast in a chapter devoted to skin and subcutaneous fat. The same is true, too, for all texts of anatomy and histology. But as this work, presented in three parts, reveals convincingly, on the basis of analysis in terms of embryology, anatomy, histology, and pathology, the breast is nothing other than a specialized region of the integument and the adipose tissue beneath it.