RESUMO
The aim of this article is to describe the clinical presentation and imaging findings of the right-sided aortic arch, an uncommon anatomical variant. We present a case of associated steal syndrome, to our knowledge the first such case in the literature. Diagnostic imaging of a 49-year-old woman with symptoms of cerebrovascular insufficiency revealed the presence of a right aortic arch, with an aberrant left subclavian artery (lusorian artery). This arrangement placed pressure on the right common carotid artery at the level of its departure with the steal phenomenon dependent on the respiratory phase.
Assuntos
Aneurisma/diagnóstico , Síndromes do Arco Aórtico/diagnóstico , Estenose da Valva Aórtica/diagnóstico , Anormalidades Cardiovasculares/diagnóstico , Transtornos de Deglutição/diagnóstico , Artéria Subclávia/anormalidades , Síndrome do Roubo Subclávio/diagnóstico , Aneurisma/complicações , Aneurisma/cirurgia , Síndromes do Arco Aórtico/complicações , Síndromes do Arco Aórtico/cirurgia , Estenose da Valva Aórtica/etiologia , Estenose da Valva Aórtica/cirurgia , Anormalidades Cardiovasculares/complicações , Anormalidades Cardiovasculares/cirurgia , Transtornos de Deglutição/complicações , Transtornos de Deglutição/cirurgia , Feminino , Humanos , Pessoa de Meia-Idade , Artéria Subclávia/cirurgia , Síndrome do Roubo Subclávio/etiologia , Síndrome do Roubo Subclávio/cirurgiaRESUMO
The most common site of suprascapular nerve compression and injury is the suprascapular notch. The aim of this study was to assess the sensitivity and specificity of sonography in determining the type of suprascapular notch (SSN). Thirty randomized patients (60 upper extremities) underwent USG examination of the shoulder area. The results were further compared with three-dimensional reconstructions of the scapulae obtained through CT examination to place the SSNs within a fivefold classification. For identification of type I, the sensitivity was 73.3% and the specificity 97.8%. For identification of type III, the values was 96.9% and 85.7%, respectively. Type II was not found in USG examination. Discrimination between type IV and V was not possible. The mean distance between the line connecting the edges of the SSN and the skin was 38 mm in right-handed patients and 34 mm in ambidextrous subjects. Ultrasonographic examination of the SSN is characterized by high specificity for type I, and high sensitivity for type III SSN. Discrimination between type IV and V of the SSN is not recommended based on sonographic evaluation.