This tag is associated with 13 posts

Pneumonia – Hospital Acquired Pneumonia versus Community Acquired Pneumonia Pathogens

History: 40 year old man with 1 week history of productive cough and fevers.  This is a classic case of lobar pneumonia, which is most commonly bacterial in origin. Hospital acquired pneumonia is commonly caused by: Staphylococcus Aureus, anaerobes, and gram negative organisms. Community acquired pneumonia is commonly caused by: Pneumococcus, mycoplasma, viruses, and not … Continue reading

Pulmonary Alveolar Proteinosis – Differential Diagnosis of Crazy Paving Pattern

History: 50 year old male with diabetes, hypertension, obstructive sleep apnea, and hyperlipidemia presents with 1 week history of hemoptysis. The differential for crazy paving pattern is wide, however, classically it is seen with pulmonary alveolar proteinosis, which was the diagnosis in this case. The differential diagnosis for crazy paving pattern is as follows: 1. … Continue reading


History: 65 year old male with a history of chronic lymphocytic leukemia presents with left sided chest pain, shortness of breath, and hypoxia after a CT-guided biopsy of a left lung mass.  This is an iatrogenic pneumothorax in a patient status post lung biopsy. This patient had a cavitary lung mass.