[Macrophage activation syndrome complicating family lymphohistiocytosis]
Yousra El Boussaadni1, Noufissa Benajiba1, Ahmed Aziz Bousfiha2
1Service de Pédiatrie, CHU Mohamed VI, Université Mohamed Premier, Oujda.
Abstract:
Macrophage activation syndrome (MAS) is an anatomoclinic entity due to inappropriate macrophage activation. It is a rare pathology, characterized by clinical signs that are not very specific and by biological elements. Their association must evoke the diagnosis. It can be classified as primary or secondary, its prognosis is still unclear. We report the case of a 3-year and 4-month-old infant admitted to our department with primary MAS in order to remind clinicians the importance of suspecting primary cause in specific situations.
Insights
Macrophage activation syndrome (MAS) is a rare condition of improper macrophage activation. Early diagnosis and suspicion of primary MAS in infants are crucial for better outcomes.
Area of Science:
- Pediatric Rheumatology
- Immunology
- Hematology
Background:
- Macrophage activation syndrome (MAS) is a severe, life-threatening hyperinflammation.
- It results from dysregulated macrophage activation and cytokine release.
- MAS can be primary or secondary to other conditions.
Observation:
- A case of primary MAS in a 3-year-old infant is presented.
- The condition presents with non-specific clinical and biological signs.
- Diagnosis requires a high index of suspicion.
Findings:
- Primary MAS diagnosis in young children can be challenging.
- Prompt recognition is essential for timely intervention.
- The prognosis of MAS remains variable.
Implications:
- This case highlights the importance of considering primary MAS in infants with suggestive symptoms.
- Clinicians should maintain a high level of suspicion for primary MAS.
- Further research is needed to clarify MAS prognosis and management.


