Hypermalacia in Premature Infants: Causes, Diagnosis, and Prognosis

What Is Hypermalacia?

Hypermalacia is abnormal softening and extreme fragility of brain tissue, a rare and typically fatal condition primarily affecting premature infants born before 28 weeks. It results from brain hypoxia, excitotoxicity, and inflammation.

Key Points

• Prematurity: Immature brain vulnerable to damage with limited repair.
• Hypoxic-ischemic injury: Oxygen deprivation and inadequate blood flow during perinatal period.
• Pathophysiology: Complex cascade: disrupted cerebral blood flow, excitotoxicity, inflammation, impaired neuroprotection.
• Imaging: Detected on MRI as abnormal signal intensity.
• Clinical presentation: Seizures, coma, motor impairment, developmental delays, feeding/breathing difficulties.
• Prognosis: Poor; many die shortly after birth, survivors often have severe neurological impairments.
• Prevention: Good obstetric care and prompt management of complications reduce brain injury risk.

Ongoing research aims to understand mechanisms and identify therapies.