Archivos de cardiologia de Mexico · 2015
[Scimitar syndrome. Correlation anatomo-embryological].
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Muñoz-Castellanos Luis, Kuri-Nivon Magdalena
Аннотация
OBJECTIVES: To describe morphologically a toracoabdominal visceral block of a scimitar's syndrome case. We propose a pathogenetic theory wich explains the development of the pulmonary venous connection in this syndrome.
METHOD: The anatomic specimen was described with the segmental sequential system. The situs was solitus, the connections between the cardiac segments and the associated anomalies were determined. The anatomy of both lungs, including the venous pulmonary connection, was described. A pathogenetic hypothesis was made, which explains the pulmonary venous connection throw a correlation between the pathology of this syndrome and the normal development of the pulmonary veins.
RESULTS: The situs was solitus, the connections of the cardiac chambers were normal; there were hypoplasia and dysplasia of the right lung with sequestration of the inferior lobe; the right pulmonary veins were connected with a curved collector which drainaged into the suprahepatic segment of the inferior vena cava; the left pulmonary veins were open into the left atrium. The sequestered inferior lobe of the right lung received irrigation throw a collateral aortopulmonary vessel. There was an atrial septal defect.
CONCLUSIONS: The pathogenetic hypothesis propose that the pulmonary venous connection in this syndrome represent the persistent of the Streeter's horizon xiv (28-30 days of development), period in which the sinus of the pulmonary veins has double connection, with the left atrium and with a primitive collector into the right viteline vein which forms the suprahepatic segment of the inferior vena cava.
METHOD: The anatomic specimen was described with the segmental sequential system. The situs was solitus, the connections between the cardiac segments and the associated anomalies were determined. The anatomy of both lungs, including the venous pulmonary connection, was described. A pathogenetic hypothesis was made, which explains the pulmonary venous connection throw a correlation between the pathology of this syndrome and the normal development of the pulmonary veins.
RESULTS: The situs was solitus, the connections of the cardiac chambers were normal; there were hypoplasia and dysplasia of the right lung with sequestration of the inferior lobe; the right pulmonary veins were connected with a curved collector which drainaged into the suprahepatic segment of the inferior vena cava; the left pulmonary veins were open into the left atrium. The sequestered inferior lobe of the right lung received irrigation throw a collateral aortopulmonary vessel. There was an atrial septal defect.
CONCLUSIONS: The pathogenetic hypothesis propose that the pulmonary venous connection in this syndrome represent the persistent of the Streeter's horizon xiv (28-30 days of development), period in which the sinus of the pulmonary veins has double connection, with the left atrium and with a primitive collector into the right viteline vein which forms the suprahepatic segment of the inferior vena cava.