but only 61% of malignant lymph nodes have a short axis >5 mm. The presence of a hyperechoic hilum was 100% indicative of nonmalignancy. The specificities of node shape, loss of hilum, and ...

Although not common, paratracheal, subcarinal, aortopulmonary window, and other mediastinal lymph node groups can be involved in the absence of hilar lymphadenopathy. The radiographic appearance ...