An Atypical Porencephalic Cyst Manifesting as a Simple Partial Seizure: A Case Report and Literature Review

BACKGROUND: Porencephaly is an extremely rare neurological disease characterized by the presence of solitary or multiple degenerative cerebrospinal fluid (CSF) cavities within the brain parenchyma. CASE REPORT: We describe a case involving a 23-year-old male who presented with involuntary movements of the left upper limb of 6 months' duration. A diagnosis of porencephaly was confirmed by magnetic resonance imaging (MRI). CONCLUSION: The rarity of occurrence and atypical presentation of such a lesion present a challenge to clinicians. Little is known about the pathogenesis and appropriate management of porencephaly. Further studies of the implications of porencephaly for neurodevelopment and behavior are needed.