A 20-year-old college student living in a dormitory presents with a 10-day history of dry cough, malaise, and headache. Vital signs show temperature 38.2°C, heart rate 92 bpm, respiratory rate 18/min, blood pressure 118/76 mmHg, and SpO2 98% on room air. Chest radiograph demonstrates diffuse patchy interstitial infiltrates disproportionate to mild clinical findings. Laboratory studies reveal elevated LDH at 520 U/L. He denies wheezing or dyspnea. Which of the following additional findings is most likely?
- A)Broad based budding yeast on silver stain
- B)Cold agglutinin mediated hemolysisGABARITO
- C)Positive urinary Legionella antigen
- D)Necrotizing cavitary pneumonia after influenza
- E)Currant jelly sputum
Explicação
Mycoplasma pneumoniae causes walking pneumonia in young adults, especially in crowded settings such as dormitories. It lacks a cell wall and can induce cold agglutinin IgM antibodies that sometimes cause hemolytic anemia. The clinical radiologic dissociation i... Ver explicação completa e trilha adaptativa →