Diffuse dermal angiomatosis (DDA) is a rare, reactive angioproliferation of the skin and is considered a subtype of diffuse cutaneous angiomatosis. DDA primarily affects the extremities of patients with severe vascular disease and other comorbidities. In the past, involvement of the breasts was considered an absolute rarity.
However, it appears that diffuse cutaneous angiomatosis is more common on the breast than previously thought (Galambos J et al 2017). The predisposing concomitant circumstances differ from those of DDA at other body sites, thus making diffuse dermal angiomatosis of the female breast a definable clinicopathologic entity in the spectrum of cutaneous reactive angiomatoses.