Histologic Diagnosis of Inflammatory Skin Diseases

Apocrine Units

…s “modified,” as so often is asserted. Nor is the breast a “modified apocrine gland” or a “modified sweat gland.” The breast simply is a distinctive region of the skin and subcutaneous tissue, the latter housing a…

Histologic Diagnosis of Inflammatory Skin Diseases

Embryologic Development

…a it emerges on the surface of the skin. Parenthetically, the breast is not an organ per se, but a specialized region of skin and subcutaneous tissue. In sum, the germ in an embryo that gives rise to an infundibuloapocrine-sebaceous follicular unit m…

Histologic Diagnosis of Inflammatory Skin Diseases

Radiation dermatitis and panniculitis

…llows megavoltage therapy, usually given for carcinoma of the breast, differs histopathologically from radiation sclerosis on one hand and the inflammatory stage of morphea on the other. Pseudosclerodermatous panniculitis, in common with the inflamma…

Histologic Diagnosis of Inflammatory Skin Diseases

Muscles

…le unaffiliated with follicles is present in abundance in the breast, especially in the vicinity of the nipple, in the labium majus, and in the scrotum, imparting to those anatomic sites distinctiveness histologically. No muscles of hair erection are…