pubmed-article:9850712 | pubmed:abstractText | Calcification of the ductus and ligamentum Botalli with no cardio-respiratory symptoms is normally a sign of their closure. However, as the calcification can be associated with a patent duct or a ductal aneurysm, its presence must not be misinterpreted. The frequency and the different patterns of this calcification must be known, as well as is diagnostic relevance. It is also important to differentiate it from other types of upper mediastinal calcification. | lld:pubmed |