AUTHOR=Yang Yan , Zhao Jianshe , Dong Chunhua , Yi Minggang , Gao Xin 

TITLE=Anomalous pulmonary venous drainage due to malposition of septum primum: two case reports and literature review

JOURNAL=Frontiers in Pediatrics

VOLUME=Volume 12 - 2024

YEAR=2024

URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2024.1436608

DOI=10.3389/fped.2024.1436608

ISSN=2296-2360

ABSTRACT=Background: Anomalous pulmonary venous connection with malposition of septum primum (MSP) is a rare pediatric cardiovascular malformation. Although reports in the literature are scarce, accurate preoperative imaging diagnosis is crucial for selecting the appropriate clinical intervention and determining the prognosis for affected children.In both case reports, the cardiovascular malformations were incidental findings. In the second case, an enlarged cardiac silhouette was observed on chest X-ray due to pneumonia, which was subsequently confirmed by ultrasound. Combined with CT angiography (CTA) examination, the diagnosis of MSP-type anomalous pulmonary venous connection was established. Conclusions: Comprehensive imaging examinations are essential in reducing misdiagnosis and achieving an accurate diagnosis of MSP-type anomalous pulmonary venous connection. The typical imaging findings for MSP-type anomalous pulmonary venous connection include absence or hypoplasia of the superior limbic band of the septum secundum, leftward displacement of the septum primum, and partial or total pulmonary vein drainage into the anatomical right atrium.