Breast density assessment is an important component of the screening mammography report and conveys information to referring clinicians about mammographic sensitivity and the relative risk for developing breast cancer. These topics have gained substantial attention because of recent legislation in several states that requires patients to be informed of dense breast tissue and the potential for associated breast cancer risk and decreased mammographic sensitivity. Because of the considerable implications of diagnosing a woman with dense breast tissue, radiologists should strive to be as consistent as possible when assessing breast density. Commonly used methods of breast density assessment range from subjective visual estimation to quantitative calculations of area and volume density percentages made with complex computer algorithms. The basic principles of currently available commercial methods of calculating fibroglandular density are described and illustrated. There is no criterion standard for determining breast density, but understanding the pros and cons of the various assessment methods will allow radiologists to make informed decisions. Radiologists should understand the basic factors involved in breast density assessment, the changes related to density assessment described in the fifth edition of the American College of Radiology Breast Imaging Reporting and Data System (BI-RADS) lexicon, and the capabilities of currently available software. Online supplemental material is available for this article.
Acneiform eruptions are dermatoses that resemble true acne. They are almost always drug induced (Indian J Dermatol Venereol Leprol 2009;75:255). Unlike true acne, acneiform eruptions have sudden onset, widespread involvement, occur in unusual locations, occur beyond typical acne age, consist of monomorphous lesions, and clear after the offending drug has been discontinued. The most common culprits are corticosteroids, iodides, bromides, anticonvulsants, Isoniazid (Acta Derm Venereol Suppl (Stockh) 1975;74:119), and immunosuppressants. We present a case of immunosuppressant‐induced acneiform eruption of the breast in a 36‐year‐old female renal transplant recipient. To our knowledge, this is the first description of this condition appearing in the breast. Both the mammographic and ultrasound features will be described.
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