bulging fissue sign;RUL consolidation d/t Klebsiella PNA

split pleura sign;pleural empyemas. used to distinguish empyema from pulmonary abscess

halo sign;invasive Aspergillus (ddx includes candida, mucor, PsA, HSV, CMV)

air crescent sign;Aspergillus infection

monod sign; same as air cresent. Aspergillus

finger-in-glove sign;tubular and branching tubular opacities that appear to emanate from the hila. assoc = ABPA