Atypical right middle lobe atelectasis

Atypical right middle lobe atelectasis after right upper lobe lobectomy. Frontal chest bedside postoperative radiograph (A) shows the displaced atelectatic right middle lobe mimicking a collapsed right upper lobe (arrow). Contrast-enhanced axial computed tomography scan in the same patient (B) shows the postoperative cephalad displacement of the atelectatic right middle lobe (arrow).