A15-year-old girl is brought to the emergency room by her parents. Over the past two days, she has developed some difficulty breathing and coughs that are productive of yellow-green sputum. Her temperature at home prior to arrival was 101.2°F. An X-ray in the emergency room reveals consolidation of the entire lower lobe of the left lung. Of the following, what is the most likely diagnosis?
Usual interstitial pneumonia
Answer : B Lobar pneumonia
The clinical scenario and radiographic findings are consistent with lobar pneumonia, which most commonly affects one entire lobe.
Acute broncho-pneumonia essentially always arises in individuals who have another underlying medical condition, such as cancer or Alzheimer’s disease.
Both interstitial and bronchopneumonia have patchy infiltrates on X-ray and do not involve one entire lobe.
Usual interstitial pneumonia presents in older adults, is associated with a more insidious onset, and does not usually have a high fever.