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Table 5 Frequency of significant conspicuities on cerebral ultrasound distributed among different gestational age and groups

From: Analyses of pathological cranial ultrasound findings in neonates that fall outside recent indication guidelines: results of a population-based birth cohort: survey of neonates in Pommerania (SNiP-study)

Gestational age group
type of conspicuity
Group IGroup II
Total cases
30–34 weeks GA
bilateral/multiple cyst
> 34 weeks GA1617
bilateral/multiple cyst813
partial agenesis of corpus callosum11
Arnold-Chiari malformation type I1 
extracerebral space enlargement (> 1 cm) (cerebral atrophy)1 
  1. Data are the number of infants in each group. Weeks GA: weeks of gestational age; IVH: intraventricular hemorrhage; PVL: periventricular leukomalacia, with > 5 cysts > 0.3-cm in diameter, along the corpus callosum; bilateral/multiple cyst: 2–5 bilateral and/or unilateral cysts (max. 0.3–1.5 cm in diameter) [20].