Population cytology of Oedaleonotus. I. The karyotypic facies of Oedaleonotus enigma (Scudder).
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An adolescent with classical Williams' syndrome who presented with hypertensive encephalopathy is described. He had the unusual combination of supravalvular aortic stenosis, long segment coarctation of the aorta, aortic hypoplasia and a high bifurcation of the abdominal aorta. Surgical resection of the coarctation was required; however, the patient has remained moderately hypertensive. The aortic anomalies in this syndrome are reviewed and their frequency and importance examined.
A family with 15 individuals in four successive generations affected by Jackson-Weiss syndrome, craniosynostosis with Crouzon-variant-like phenotype and feet's abnormalities, is presented. An autosomal dominant inheritance pattern with complete penetrance, variable expressivity, and wide intrafamilial variation, more among, less within the same generation, was observed. Concerning the frequency and severity of complications, the evolution of craniofacial deformities seems to parallel those described with Crouzon syndrome, suggesting the similar evaluation and management.
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Two strikingly similar twin sisters presented with characteristic facial anomalies and distinctive radiographic findings. The occurrence of this unique pattern of malformations in two sisters with unaffected parents suggests recessive inheritance. They most likely represent a previously unrecognised malformation syndrome.
Three newborns with thin ribs and thin long bones with multiple fractures are reported. Whereas one patient presents a syndromic association of bone dysplasia and intrauterine dwarfism two other patients cannot be appropriately evaluated due to lack of basic clinical and pathologic data.
Two strikingly similar infant siblings showed the following pattern of anomalies: unusual cranio-facial appearance, arthrogryposis, advanced bone age of the hips and unique skeletal X-ray abnormalities. They represent a previously unrecognised, fatal malformation syndrome.
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We have collected and studied the genealogical data of 8 patients with the autosomal recessive syndrome of microcephaly, normal intelligence, immunodeficiency, risk of malignancy and chromosomal instability resembling ataxia telangiectasia (AT), but different in complementation group. 50% of our probands died from lymphoreticular malignancies in early childhood. We have found a significantly increased incidence of malignant tumors in 142 blood relatives as compared with a control group of 87 spouses. All patients belonged to the same complementation group differing from the 5 known AT complementation groups, which seems to be in general more malignant than all other groups of AT. From this standpoint our material is homogeneous in contrast to other similar studies in AT families. We think this syndrome represents another model to examine the relationship between genetic background, chromosomal abnormalities, immunodeficiency and cancer development.
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