Chlamydia pneumonia is a form of atypical pneumonia.
It is caused be the organism Chlamydophila pneumoniae (a species of Chlamydophila) which is an obligate intracellular bacterium that infects humans.
Non specific with overlap of features with pneumonias from other organisms. Can have a wide spectrum of findings inclusive of
- bronchovascular bundle thickening
- pleural effusion
- lymphadenopathy : uncommon
- reticular or linear opacities
- airway dilatation
- pulmonary emphysema
Many have bilateral lung involvement.