Multicystic encephalopathy--a polyetiologic condition in early infancy: morphologic, pathogenetic and clinical...

Area of Science:

• Neurology
• Pediatrics
• Pathology

Background:

• Severe multicystic encephalopathy (MCE) is a condition observed in infants and young children.
• MCE presents a consistent pattern of brain damage despite diverse underlying causes.
• Understanding the pathogenesis of MCE is crucial for early diagnosis and intervention.

Purpose of the Study:

• To analyze eleven cases of severe multicystic encephalopathy (MCE) in young children.
• To discuss the polyetiologic nature and common pathogenetic mechanisms of MCE.
• To explore the role of anoxia, hypercapnia, and brain edema in MCE pathogenesis.

Main Methods:

• Case series analysis of eleven infants and one child with MCE.
• Review of clinical data, underlying disorders, and pathogenetic mechanisms.
• Literature review to compare findings with previously reported MCE cases.

Main Results:

• Diverse etiologies were identified, including circulatory/respiratory disturbances (5 cases), meningoencephalitis (2 cases), carbon monoxide poisoning (1 case), and meningocerebral angiomatosis (2 cases).
• One case had an obscure etiology following a complicated twin birth.
• A common pathogenetic mechanism, likely involving anoxia, hypercapnia, and brain edema, is proposed for the consistent MCE brain damage pattern.

Conclusions:

• MCE is a polyetiologic condition in early infancy with a characteristic pattern of brain damage.
• The consistent damage pattern suggests a specific reactive mode of the infantile brain to common pathogenetic events.
• Anoxia with hypercapnia and subsequent brain edema are key proposed pathogenetic events in MCE.