MUC1 and COVID-19: In particular, in COVID-19-positive patients with KL-6 > 400 U/mL the significant radiological patterns were "crazy paving" at the right upper (n = 8; 61.5%) and middle lobe (n = 4; 30.8%) and "consolidation" at the middle lobe (n = 5; 38.5%) (Table 2).