Treatment was attempted for both a suspected spider bite (2 weeks of topical triamcinolone 0.1%) and presumed cellulitis (oral doxycycline 100 mg bid/5 d), but neither improved her condition. Concerned for the possibility of cutaneous breast cancer, a punch biopsy was ordered and revealed diffuse dermal angiomatosis (DDA).
DDA is an uncommon proliferation of cutaneous blood vessels causing a reticular blood vessel pattern, as seen in this image. Typically, DDA is associated with tissue hypoxia due to arterial insufficiency from peripheral artery disease. In recent years, there have been numerous case reports of painful ulcerated lesions and reticular blood vessels occurring in women with large, pendulous breasts, increased body mass index, and a history of smoking. One theory suggests that the weight of the breasts causes tissue to stretch, compressing the blood vessels. This, combined with smoking, leads to localized hypoxia and DDA.
Treatments have included oral isotretinoin, calcium channel blockers, aspirin, or pentoxifylline to help circulation. Smoking cessation is recommended, as well as reduction mammoplasty to decrease the stretch on the tissues and relieve the local hypoxia. Although invasive, breast reduction surgery has moved to the forefront of therapy, with reports having shown resolution of the ulcers and pain.1
Two important aspects of clinical medicine are highlighted by this case. First, nonhealing lesions that are not responding to prescribed therapies may require biopsy to rule out malignancy. Second, when there is difficulty making a diagnosis, especially with uncommon diseases, biopsy and input from a pathologist can be extremely helpful.
In this case, the patient was referred to Plastic Surgery and scheduled for reduction mammoplasty. The patient was advised to stop smoking for at least 4 weeks prior to the surgery to possibly improve her condition and reduce the likelihood of postoperative complications.
Photo courtesy of Michael Louie, MD, and text courtesy of Michael Louie, MD, and Daniel Stulberg, MD, FAAFP, Department of Family and Community Medicine, University of New Mexico School of Medicine, Albuquerque