Azygos ACA (Alpers et al. 1959; Bap tista et al. 1963; Pool et al. 1965), triple ACA (Baptista et al. 1963) and A1 fenestration (A1 pers et al. 1959; Crompton, 1962; Baptista et al. 1963; Teal et al. 1973; Ito et al. 1981; Krayenbuhl et al . 1982) are known as anomalies related to the anterior cerebral artery (ACA). Each of them is a rare vascular anomaly, and only a few reports have been prese...

Only a few cases of Turner syndrome (TS) with ischemic stroke have been reported. Various arteriopathies of the cerebral arteries, including fibromuscular dysplasia, congenital hypoplasia, moyamoya syndrome, and premature atherosclerosis have been assumed to be the cause of ischemic stroke in TS. There has been no case report of a TS patient presenting with an embolic stroke pattern without any...

PURPOSE To determine whether a relationship exists between normal variations in anatomy of the circle of Willis and the size of the internal carotid arteries (ICA). METHODS MR angiograms and axial MR images of the brains of 104 patients were reviewed. Included were 10 patients with unilateral absence of the A1 segment of the anterior cerebral artery, 10 with hypoplasia of one A1 segment, 28 w...

This article describes a straightforward method to measure the dimensions and identify morphological variations in the cerebral arterial circle using the general-purpose software program Osiris. This user-friendly and portable program displays, manipulates, and analyzes medical digital images, and it has the capability to determine morphometric properties of selected blood vessels (or other ana...

BACKGROUND AND PURPOSE MR imaging findings of cerebellar cortical dysplasia have been described as a new cerebellar malformation. The purpose of this study was to assess the association of cerebellar cortical dysplasia with other cerebral malformations. METHODS We retrospectively reviewed 46 MR examinations of patients presenting with developmental delay, hypotonia, and facial deformities to ...

We demonstrate using conditional mutagenesis that Pbx1, with and without Pbx2(+/-) sensitization, regulates regional identity and laminar patterning of the developing mouse neocortex in cortical progenitors (Emx1-Cre) and in newly generated neurons (Nex1-Cre). Pbx1/2 mutants have three salient molecular phenotypes of cortical regional and laminar organization: hypoplasia of the frontal cortex, ...

150 Maxillary sinus hypoplasia (MSH) is the underdevelopment of maxillary sinus antrum and it is usually associated with other anomalies, such as uncinate process and infundibular passage. Hypoplasia is classified into three: Type I is mild hypoplasia, normal uncinate and infundibulum; Type II is significant hypoplasia with hypoplastic or absent uncinate and pathological infundibular passage; T...

AIMS Levels of enamel hypoplasia in past populations are frequently used to study health. However, few studies have looked at patterning in the occurrence of different types of hypoplasia. In this pilot study, skeletal remains from an Iron Age tomb at Pella in Jordan were analysed for the presence of linear and pit enamel hypoplasia, to investigate enamel hypoplasia aetiology by comparison of t...