Idiopathic pericerebral swelling (external hydrocephalus) of infants

摘要: Benign enlargement of the subarachnoid spaces was diagnosed in 41 infants on basis ultrasound and/or CT scan findings. 10 MHz transfontanellar ultrasonography is without doubt most reliable investigation this condition (skull-to-cortex distance greater than 5 mm). Patients with extracerebral collections due to a clearly identifiable pathologic process (e.g., prematurity, IUGR, neonatal distress, malnutrition) were excluded from study. Macrocrania developed rapidly 72% patients, either as single manifestation (30%) or delayed motor development and hypotonia (30%). Other clinical patterns included evidence intracranial hypertension (15%) macrocrania (20%). The two main findings study high rate familial forms severity early hemorrhagic complications, i.e., spontaneous subdural hematoma (5/41 cases), permanent neurologic impairment some instances (2/5 cases). These complications call into question benignity syndrome whose long-term outcome, particularly terms cognitive function, yet unknown.