Portal de Periódicos da CAPES

A clinical review on megalencephaly

2017; Wolters Kluwer; Volume: 96; Issue: 26 Linguagem: Inglês

10.1097/md.0000000000006814

1536-5964

Piero Pavone, Andrea D. Praticò, Renata Rizzo, Giovanni Corsello, Martino Ruggieri, Enrico Parano, Raffaele Falsaperla,

Genetic and Kidney Cyst Diseases

Megalencephaly and macrocephaly present with a head circumference measurement 2 standard deviations above the age-related mean. However, even if pathologic events resulting in both megalencephaly and macrocephaly may coexist, a distinction between these two entities is appropriate, as they represent clinical expression of different disorders with a different approach in clinical work-up, overall prognosis, and treatment. Megalencephaly defines an increased growth of cerebral structures related to dysfunctional anomalies during the various steps of brain development in the neuronal proliferation and/or migration phases or as a consequence of postnatal abnormal events. The disorders associated with megalencephaly are classically defined into 3 groups: idiopathic or benign, metabolic, and anatomic. In this article, we seek to underline the clinical aspect of megalencephaly, emphasizing the main disorders that manifest with this anomaly in an attempt to properly categorize these disorders within the megalencephaly group.