[Extrapulmonary infections due to Mycoplasma pneumoniae]

Area of Science:

• Pediatric Infectious Diseases
• Microbiology
• Clinical Medicine

Context:

• Mycoplasma pneumoniae is a common respiratory pathogen in children, typically causing pneumonia.
• However, extrapulmonary manifestations of M. pneumoniae infections are increasingly recognized.
• Understanding these diverse clinical presentations is crucial for accurate diagnosis and management.

Purpose:

• To review and describe the unusual clinical features of Mycoplasma pneumoniae infections in children beyond typical pneumonia.
• To highlight the range of extrapulmonary manifestations, including neurological, cardiac, hematologic, and other organ systems.
• To discuss the potential pathogeny and controversial treatment aspects of these complications.

Summary:

• Mycoplasma pneumoniae infections in children can present with a wide spectrum of extrapulmonary symptoms.
• Neurological complications such as encephalitis and meningoencephalitis are most common, followed by meningitis, myelitis, and polyradiculitis.
• Cardiac involvement (pericarditis, myocarditis), cold agglutinin hemolytic anemia, and skin, renal, gastrointestinal, and osteoarticular manifestations have also been reported.
• The exact mechanisms, including direct invasion and autoimmune responses, are not fully understood, and treatment strategies remain debated.

Impact:

• This review enhances clinical awareness of the diverse manifestations of Mycoplasma pneumoniae in pediatric patients.
• It aids clinicians in recognizing and diagnosing less common complications, potentially improving patient outcomes.
• Further research into the pathogeny and optimal treatment of extrapulmonary M. pneumoniae infections is warranted.