The round nipple shadow

ArticleinRadiology 121(2):293-4 · December 1976with22 Reads
Impact Factor: 6.87 · DOI: 10.1148/121.2.293 · Source: PubMed


    It is usually easy to distinguish the round nipple shadow from a lesion, especially by means of repeat radiographs with nipple markers. However, the radiologist must occasionally interpret a round density in the lower chest on the basis of a single radiograph or series of radiographs. Fortunately, a nipple shadow usually has a well-defined outer margin and a poorly defined inner margin. Differentiation of a nipple shadow from an extrapleural or pleural lesion is described. Attention to these findings may prevent needless additional study and patient apprehension.