Chlamydia abortus-induced Pneumonia with Psychiatric Symptoms and Pneumomediastinum: A Rare Case Report and Discussion
Introduction:
Chlamydia is an obligate intracellular parasitic bacterium that can cause a range of diseases in humans and animals. Chlamydia abortus, a zoonotic pathogen, is known to cause miscarriage, pelvic inflammatory disease, and septicemia during pregnancy. However, its role in human pneumonia is less well-known. This case report highlights a rare instance of Chlamydia abortus-induced pneumonia complicated by pneumomediastinum and psychiatric symptoms.
Case Presentation:
A 35-year-old male salesperson with no history of smoking developed fever, cough, and sputum production after contact with parrots. He initially sought treatment at a local hospital, where a chest CT scan revealed inflammation in the left lower lung, and he was diagnosed with community-acquired pneumonia. Despite treatment with cefotaxime and piperacillin-tazobactam, his condition worsened, and he was transferred to our hospital. Further imaging revealed bilateral pulmonary inflammation, cervical and mediastinal emphysema, and a possible bone island in the left scapula. The patient exhibited irritability, disorganized speech, and inconsistent symptoms, along with abnormal vital signs and laboratory findings.
Diagnostic Approach and Treatment:
The patient was treated with oral doxycycline and intravenous cefoperazone-sulbactam, along with nasal oxygen therapy and intermittent prone-position ventilation. Bronchoscopy revealed purulent changes in the left lower lobe, and targeted next-generation sequencing identified Chlamydia abortus as the predominant pathogen. The patient's condition improved with continued treatment, and he was discharged after a two-week hospital stay.
Discussion:
This case report highlights the rarity of Chlamydia abortus-induced pneumonia complicated by pneumomediastinum and psychiatric symptoms. The patient's condition was successfully managed with targeted antimicrobial therapy and control of systemic inflammation. The discussion section explores the pathogenesis of pneumomediastinum, the role of inflammation in psychiatric symptoms, and the importance of early diagnosis and treatment in such cases.
Conclusion:
In summary, this case report expands the clinical spectrum of Chlamydia abortus infection, emphasizing the importance of recognizing its potential to cause pneumonia, pneumomediastinum, and psychiatric symptoms. Early diagnosis and targeted treatment are crucial for managing this rare zoonotic infection effectively.
