Is that pneumonia? Atelectasis

Case presentation

A 22-month-old female presents with cough and congestion for the past 5 days. She was noted to have persistent fever to 102 degrees Fahrenheit. She has been taking oral fluids well, but this has decreased over the past few days, although she still has good urine output. There has been no vomiting, diarrhea, or concern for foreign body ingestion/choking episodes. Her physical examination reveals a febrile child (101.5 degrees Fahrenheit) with a respiratory rate of 25 breaths per minute, a heat rate of 140 beats per minute, and a pulse oximetry reading of 85% on room air. She is alert and vigorous but with mild respiratory distress. There are scattered crackles and wheezing throughout her lung fields, but especially at the left lower lobe. She has moderate intercostal retractions without stridor or grunting. The remainder of her examination is unremarkable.

Imaging considerations