Presentation
Fever and cough.
Patient Data
Age: 3 years
Gender: Female
From the case:
Left upper lobe collapse
Frontal

There is a veiling opacity over the left hemithorax, and the left cardiac margin is not clearly seen. The mediastinum is slightly shifted towards the left.
Case Discussion
In this instance the lobar collapse was secondary to mucus plugging in the context of a viral respiratory tract illness.