نتایج جستجو برای: vascular ring anomaly
تعداد نتایج: 377403 فیلتر نتایج به سال:
A 40 year old woman presented with dysphagia which was due to one of the forms of vascular ring. Her symptoms were relieved by relatively conservative surgery. The means of diagnosis and the surgical approach are discussed.
Ring chromosome 22 is a rare cytogenetic anomaly. The aim of this study was to present a case carrying ring chromosome 22 in a 9-year-old Chinese girl with long face, thick eyebrows, large and low-set ears, mental retardation, severe speech delay, autistic disorders and talipes equinovarus (TEV). A chromosome analysis of the proband revealed a de novo 46,XX,r(22)(p13;q13) karyotype and the dele...
Bilateral absence of the superior vena cava (SVC) is a very rarely detected, mainly asymptomatic congenital vascular anomaly. Though usually innocent, this anomaly may complicate cardiothoracic surgery and certain procedures like central venous catheter insertion. This SVC anomaly is poorly known, and we assume that its incidence in the general population may be higher than detected. In this pa...
An aberrant right subclavian artery (ARSA) arising from the proximal portion of the descending thoracic aorta is the most common congenital anomaly of the aortic arch. This irregularity occurs in 0.51% of the population. Degenerative aneurysmal changes may occur in the proximal portion of an ARSA or at its aortic origin. This abnormal vessel passes posterior to the esophagus, and, in rare cases...
Hydranencephaly is a rare anomaly of the central nervous system (CNS)which charaderised by absence of the cerebral hemispheres. The etiologic hypotheses are numerous and the causal injuries have been thought to be vascular ocdusion. viral encephalitis and genetic abnormalities.
THORACIC ARTERIALI ANOMALIES were formerly regarded as having little significance except when they produced tracheal or esophageal obstruction. As thoracic surgical procedures become more prevalent in the smaller or community hospitals, the case concentration will become less, and many of these anomalies may go unrecognized. Recognition of the many types of vascular disarrangement thus assumes ...
CASE SUMMARY A 3-year-old male, neutered, domestic shorthair cat with a history of chronic regurgitation since being obtained as a kitten was presented for weight loss and regurgitation of all ingested food. The cat was in poor body condition and had a firm swelling in the ventral neck at the time of presentation. Thoracic radiographs showed severe dilation of the entire cervical and cranial in...
Major anomaly patterns of annual tree-ring growth in “drought-sensitive’’ trees of the Western United States, 1931-1962, seem to reflect corresponding patterns in monthly precipitation amounts, which in turn may be related to circulation anomalies. The three most important anomaly patterns that dominated the 1931-1962 period were also prominent in the tree-growth data during the preceding perio...
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