منابع مشابه
Computed tomography in the evaluation of vascular rings and slings
Vascular rings are congenital abnormalities of the aortic arch-derived vascular and ligamentous structures, which encircle the trachea and oesophagus to varying degrees, resulting in respiratory or feeding difficulties in children. A sling is an abnormality of the pulmonary arterial system resulting in airway compression. Although several imaging examinations are available for the evaluation of...
متن کاملNonoperative management of complete tracheal rings.
BACKGROUND Children with complete tracheal rings are often challenging to manage. Most children will present early with a severely compromised airway and will require tracheal reconstruction. OBJECTIVE To show that a small number of minimally symptomatic patients with complete tracheal rings experience airway growth over time and do not require tracheoplasty. DESIGN A retrospective medical ...
متن کاملPrenatal diagnosis of vascular rings.
OBJECTIVES The purpose of this series was to identify vascular rings prenatally on fetal echocardiograms. METHODS We reviewed the fetal echocardiograms and clinical histories of 9 patients with a diagnosis of vascular rings at our institution from 2004 to 2009. Eight patients had a prenatal diagnosis by fetal echocardiography. One other patient who had undergone fetal echocardiography had a d...
متن کاملOn n-coherent rings, n-hereditary rings and n-regular rings
We observe some new characterizations of $n$-presented modules. Using the concepts of $(n,0)$-injectivity and $(n,0)$-flatness of modules, we also present some characterizations of right $n$-coherent rings, right $n$-hereditary rings, and right $n$-regular rings.
متن کاملPediatric Tracheal Stenosis and Vascular Rings Çocuklarda Trakeal Stenoz Ve Vasküler Halkalar
Pediatric tracheal stenosis includes a variety of entities characterized by a diminished airway lumen. Congenital entities can be classified into (i) intrinsic disease caused by short(e.g. tracheal webs) or long-segment forms of tracheal stenosis (e.g. tracheal atresia/agenesis and primary tracheomalacia) and (ii) extrinsic disease caused by cardiovascular anomalies such as vascular rings and/o...
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ژورنال
عنوان ژورنال: Mayo Clinic Proceedings
سال: 1993
ISSN: 0025-6196
DOI: 10.1016/s0025-6196(12)60913-6