Pneumonia can be caused by typical or atypical bacteria. Mycoplasma pneumoniae typically causes lower lobe involvement in young patients and presents with mild symptoms. Chlamydia pneumoniae causes a slow recovery with sore throat and hoarseness. Legionella pneumophila is associated with fresh water and moist soil exposure and can cause extrapulmonary findings on labs. Investigations for atypical pneumonia include CBC, chest x-ray, sputum examination, blood cultures, and PCR or cultures of sputum.

1. Namrata Dass

2. Pneumonia Typical Atypical

3. Causes: Mycoplasma pneumoniae - young pt - lower lobe involvement Chlamydia pneumoniae - mild symptoms, slow recovery - sore throat ,hoarseness Legionella pneumophila - fresh water, moist soil - extrapulmonary findings and labs

4. Other causes Chlamydia psittaci C. burnetti Chlamydia trachomatis Viral agents

5. Investigations: CBC X ray Sputum examination Blood culture Others

6. Sputum examination Color , amount, consistency, odor Gram stain Direct fluorescent antibody PCR Culture

7. X - Ray

8. X - Ray

9. X - Ray