A Case of Anomalous Drainage of the Superior Vena Cava Into the Left Atrium

Isolated right superior vena cava draining into the left atrium in a child with vein of Galen aneurysmal malformation—case report

“…The association between isolated RSVC drainage of into LA and VGAMs, can be explained by the increased venous return through the SVC in utero that could interfere with the absorption of the right horn of the SV. This may lead to a relative leftward and cephalic distortion of the right horn of the SV, this results in opening of the SVC into the LA [ 4 , 5 ].…”

Isolated right superior vena cava drainage into the left atrium: An uncommon cause of persistent hypoxia in a neonate

“…There are several cases of this defect in association with other congenital heart defects and heterotaxy, but through our review only 42 cases of this as an isolated anomaly have been reported in the English literature to date 1,3‐43 . Table 1 summarizes the reported cases as case number, year of publication, first author, age and gender of patient, presentation, method of diagnosis, and the outcome.…”

Biatrial drainage of right superior caval vein with preferential streaming into the left atrium

“…2 Kirsch and associates postulated that drainage of the RSVC to the LA is likely caused by malposition of the right horn of the sinus venosus during fetal life. 5 Another theory by Braudo et al suggested that the cephalic portion of the right valve of the sinus venosus fuses with the atrial septum superior to the coronary sinus inlet, forming a seal that prevents the superior caval vein from draining into the RA. 6 The prevalence of sinus venosus ASD varies from 5 to 10% of patients with ASDs.…”