Fig. 13From: Chest imaging using signs, symbols, and naturalistic images: a practical guide for radiologists and non-radiologistsFleischner sign. The “Fleischner sign” consists of a prominent central pulmonary artery upstream of cutoff (white arrows in a, black asterisk in b). It is frequently caused by a large embolus into the central pulmonary artery, as well depicted on axial CT image of the same patient (c, white arrowhead)Back to article page